Standard Lemma guide

tertiary

adj · name · noun · 13 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈtɜː.ʃi.ə.ɹiː/
  • Received-Pronunciation: /ˈtɜː.ʃə.ɹiː/
  • Received-Pronunciation: /ˈtɜːʃ.ɹiː/
  • Canada, General-American: /ˈtɝ.ʃiˌɛɹ.i/
  • Canada, General-American: /ˈtɝ.ʃə.ɹi/
  • General-American: Recorded audio is listed in the source snapshot.
  • Australian: /ˈtɜː.ʃi.ə.ɹiː/
  • Australian: /ˈtɜː.ʃə.ɹiː/
  • Australian: /ˈtɜːʃ.ɹiː/
  • Queensland Recorded audio is listed in the source snapshot.
  • CMU ARPABET: T ER1 SH ER0 IY0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: T ER1 SH IY0 EH2 R IY0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Of third rank or order; subsequent.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Possessing some quality in the third degree; especially having been subjected to the substitution of three atoms or radicals.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: chemistry, natural-sciences, physical-sciences

Examples

  • a tertiary alcohol, amine, or salt

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Of quills: growing on the innermost joint of a bird's wing; tertial.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: biology, natural-sciences, ornithology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Of or pertaining to the first part of the Cenozoic era when modern flora and mammals appeared.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

name

Meaning 5

The first part of the Cenozoic era when modern flora and mammals appeared.

Definition source: English Wiktionary via Wiktextract

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Any item considered to be of third order.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

A tertiary colour.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

Something from the Tertiary Period (the former term for the geologic period from 65 million to 2.58 million years ago).

Definition source: English Wiktionary via Wiktextract

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

A tertiary feather; a tertial.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences, ornithology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

A large stage in some extremely powerful thermonuclear weapons (resembling a greatly-enlarged secondary) which is compressed by the explosion of the secondary until ignition of nuclear fusion takes place, in much the same manner as the secondary is imploded by the primary, and which can allow for the attainment of yields of many tens or even hundreds of megatons, and likely even greater; not used in modern weapons due to a greater focus on the accurate use of sub-megaton weapons, the tremendous size of weapons incorporating a tertiary, and the lack of targets whose destruction would necessitate the use of a three-stage weapon.

Definition source: English Wiktionary via Wiktextract

Topics: government, military, politics, war

Examples

  • A gigaton-scale weapon would of necessity be a three-stage design (incorporating a fusion tertiary - likely with its own massive fission tamper - in addition to the fission primary and fission-jacketed fusion secondary), as a reasonably-sized primary would likely have difficulty imploding to ignition the enormous secondary that would be required to reach a one-gigaton yield with a two-stage thermonuclear.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

noun

Meaning 11

A member of a Roman Catholic third order; a layperson who participates in activities similar to those engaged in by men and women who take religious vows (respectively the first and second orders), and who may wear some elements of an order's habit such as a scapular.

Definition source: English Wiktionary via Wiktextract

Topics: Catholicism, Christianity, Roman-Catholicism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

adjective satellite

Meaning 12

coming next after the second and just before the fourth in position

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: third, 3rd

Antonyms: none provided

13

noun

Meaning 13

from 63 million to 2 million years ago

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Tertiary period

Antonyms: none provided

Broader terms: period, geological period

History

Etymology

PIE word *tréyes Borrowed from the Latin tertiārius (“of the third part or rank”), from tertius (“third”) (from Proto-Indo-European *tr̥tyós, whence English third) + -ārius (whence the English suffix -ary); compare the French tertiaire. By surface analysis, terti- + -ary.

See tertiary.

Across languages

Translations

58 source translations are retained for this English entry.

  • Bulgarian: трети по важност (treti po važnost) — of third rank or order
  • Catalan: terciari — of third rank or order
  • Chinese Mandarin: 第三的 — of third rank or order
  • Danish: tertiær — of third rank or order
  • Dutch: tertiair — of third rank or order
  • Esperanto: terciara — of third rank or order
  • Esperanto: triaspeca — of third rank or order
  • Esperanto: triaranga — of third rank or order
  • Finnish: tertiaarinen — of third rank or order
  • French: tertiaire — of third rank or order
  • Galician: terciario — of third rank or order
  • German: tertiär — of third rank or order
  • Greek: τριτογενής (tritogenís) — of third rank or order
  • Greek: τριτοβάθμιος (tritováthmios) — of third rank or order
  • Hebrew: שלישוני (shlishoni) — of third rank or order
  • Hungarian: tercier — of third rank or order
  • Icelandic: þriðji — of third rank or order
  • Ido: terciara — of third rank or order
  • Indonesian: tersier — of third rank or order
  • Italian: terziario — of third rank or order
  • Japanese: 3次的な (sanjiteki-na) — of third rank or order
  • Japanese: 3番目の (sanbanme-no) — of third rank or order
  • Malay: tertier — of third rank or order
  • Norwegian Bokmål: tertiær — of third rank or order
  • Norwegian Nynorsk: tertiær — of third rank or order
  • Polish: trzeciorzędny — of third rank or order
  • Portuguese: terciário — of third rank or order
  • Romanian: terțiar — of third rank or order
  • Russian: трети́чный (tretíčnyj) — of third rank or order
  • Spanish: terciario — of third rank or order
  • Swedish: tertiär — of third rank or order
  • Turkish: üçüncül — of third rank or order
  • Catalan: terciari — of the first part of the Cenozoic era
  • Catalan: terciària — of the first part of the Cenozoic era
  • Finnish: tertiäärikautinen — of the first part of the Cenozoic era
  • Finnish: tertiäärinen — of the first part of the Cenozoic era
  • Georgian: მესამეული (mesameuli) — of the first part of the Cenozoic era
  • Italian: terziario — of the first part of the Cenozoic era
  • Polish: trzeciorzędowy — of the first part of the Cenozoic era
  • Catalan: terciari — first part of the Cenozoic era
  • Finnish: tertiäärikausi — first part of the Cenozoic era
  • French: Tertiaire — first part of the Cenozoic era
  • Georgian: მესამეული სისტემა (mesameuli sisṭema) — first part of the Cenozoic era
  • Georgian: მესამეული პერიოდი (mesameuli ṗeriodi) — first part of the Cenozoic era
  • German: Tertiär — first part of the Cenozoic era
  • Hungarian: harmadkor — first part of the Cenozoic era
  • Hungarian: harmadidőszak — first part of the Cenozoic era
  • Italian: terziario — first part of the Cenozoic era
  • Japanese: 第三紀 (daisanki) — first part of the Cenozoic era
  • Polish: trzeciorzęd — first part of the Cenozoic era
  • Swedish: tertiär — first part of the Cenozoic era
  • Vietnamese: kỉ Đệ Tam — first part of the Cenozoic era
  • Bulgarian: махово перо (mahovo pero) — tertiary feather
  • Italian: terziario — tertiary feather
  • Polish: lotka trzeciego rzędu — tertiary feather
  • Italian: terziario — Roman Catholicism: member of a third order
  • Polish: tercjarz — Roman Catholicism: member of a third order
  • Polish: tercjarka — Roman Catholicism: member of a third order
Real reading context

tertiary in complete knowledge articles