Standard Lemma guide

-logy

suffix · 2 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

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  • -ləjē
  • /-lə.d͡ʒi/
  • US: Recorded audio is listed in the source snapshot.

1

suffix

Meaning 1

A branch of learning; a study of a particular subject.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme, uncountable, usually

Examples

  • Examples: biology, geology, genealogy

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

suffix

Meaning 2

Speech, or a way of speaking, a narrative, logical discourse.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme, uncountable, usually

Examples

  • Examples: haplology, eulogy, trilogy, apology

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *leǵ- Ancient Greek λόγος (lógos) Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-i-eh2 Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor. Latin -logialbor. French -logiebor. English -logy The English -logy suffix originates with loanwords from the Greek, usually via Latin and French, where the suffix -λογία (-logía) is an integral part of the word loaned. E.g. astrology from astrologia, since the 16th century. The French -logie is a continuation of Latin -logia, ultimately from Ancient Greek -λογία (-logía). Within Greek, the suffix is an -ία (-ía) abstract from λόγος (lógos, “account, explanation, narrative”), itself a verbal noun from λέγω (légō, “to say, speak, converse, tell a story”). Within English, the suffix becomes productive, especially to form names of sciences or departments of study, analogous to names of disciplines loaned from the Latin, such as astrology from astrologia or geology from geologia. Original compositions of terms with no precedent in Greek or Latin become common beginning in the later 18th century, sometimes imitating French or German templates (e.g. insectology, attested 1766, after French insectologie; terminology, attested 1801, after German Terminologie). In a third stage, from the 19th century, the suffix becomes productive enough to form nonce combinations with English terms with no Greek or Latin origin, such as undergroundology (1820), hatology (1837). Finally, from the second half of the 19th century, the suffix has also been used as a simplex as ology (plural ologies) and logy (plural logies), in parallel with and often alongside ism (plural isms).

Across languages

Translations

130 source translations are retained for this English entry.

  • Afrikaans: -logie — branch of learning
  • Albanian: -logji — branch of learning
  • Arabic: ـلُوجِيَا (-lūjiyā) — branch of learning
  • Arabic: عِلْم اَلـ (ʕilm al--) — branch of learning
  • Aragonese: -lochía — branch of learning
  • Armenian: -լոգիա (-logia) — branch of learning
  • Asturian: -loxía — branch of learning
  • Azerbaijani: -şünaslıq — branch of learning
  • Azerbaijani: -logiya — branch of learning
  • Azerbaijani: -çilik — branch of learning
  • Basque: -logia — branch of learning
  • Belarusian: -ло́гія (-lóhija) — branch of learning
  • Breton: -loji — branch of learning
  • Bulgarian: -ло́гия (-lógija) — branch of learning
  • Burmese: ဗေဒ (beda.) — branch of learning
  • Catalan: -logia — branch of learning
  • Cebuano: -lohia — branch of learning
  • Chinese Cantonese: 學 /学 (hok6) — branch of learning
  • Chinese Mandarin: 學 /学 (xué) — branch of learning
  • Corsican: -lugia — branch of learning
  • Czech: -logie — branch of learning
  • Danish: -logi — branch of learning
  • Dutch: -logie — branch of learning
  • Dutch: -kunde — branch of learning
  • Dutch: -leer — branch of learning
  • Erzya: -тона (-tona) — branch of learning
  • Esperanto: -logio — branch of learning
  • Estonian: -loogia — branch of learning
  • Faroese: -frøði — branch of learning
  • Finnish: -logia — branch of learning
  • Finnish: -oppi — branch of learning
  • French: -logie — branch of learning
  • Friulian: -logjie — branch of learning
  • Galician: -loxía — branch of learning
  • Georgian: -ლოგია (-logia) — branch of learning
  • German: -kunde — branch of learning
  • German: -lehre — branch of learning
  • German: -wissenschaft — branch of learning
  • German: -logie — branch of learning
  • German: -ik — branch of learning
  • German: -logie — branch of learning
  • Greek: -λογία (-logía) — branch of learning
  • Ancient Greek: -λογία (-logía) — branch of learning
  • Haitian Creole: -loji — branch of learning
  • Hebrew: ־לוֹגְיָה (-logya) — branch of learning
  • Hindi: -ज्ञान (-jñān) — branch of learning
  • Hungarian: -lógia — branch of learning
  • Hungarian: -ászat — branch of learning
  • Hungarian: -észet — branch of learning
  • Hungarian: -tan — branch of learning
  • Hungarian: -tudomány — branch of learning
  • Icelandic: -fræði — branch of learning
  • Ido: -logio — branch of learning
  • Indonesian: -logi — branch of learning
  • Interlingua: -logia — branch of learning
  • Irish: eolaíocht — branch of learning
  • Italian: -logia — branch of learning
  • Japanese: 学 (-gaku) — branch of learning
  • Japanese: -ロジー (-rojī) — branch of learning
  • Javanese: -ꦮꦶꦢꦾ (-widya) — branch of learning
  • Kazakh: -тану (-tanu) — branch of learning
  • Kazakh: -логия (-logiä) — branch of learning
  • Khmer: -វិទ្យា (vityiə) — branch of learning
  • Khmer: -សាស្ត្រ (saastrɑɑ) — branch of learning
  • Korean: 학 (hak) — branch of learning
  • Northern Kurdish: -lojî — branch of learning
  • Northern Kurdish: -nasî — branch of learning
  • Northern Kurdish: -zanî — branch of learning
  • Northern Kurdish: -vanî — branch of learning
  • Kyrgyz: -логия (-logiya) — branch of learning
  • Lao: -ວິທະຍາ (wi tha nyā) — branch of learning
  • Lao: -ສາດ (sāt) — branch of learning
  • Latin: -logia — branch of learning
  • Latvian: -logija — branch of learning
  • Lithuanian: -logija — branch of learning
  • Low German: -logie — branch of learning
  • Luxembourgish: -logie — branch of learning
  • Macedonian: -логија (-logija) — branch of learning
  • Malay: -logi — branch of learning
  • Malay: kaji — branch of learning
  • Maltese: -loġija — branch of learning
  • Mongolian: зүй (züj) — branch of learning
  • Navajo: naalkaah — branch of learning
  • Norwegian Bokmål: -logi — branch of learning
  • Norwegian Nynorsk: -logi — branch of learning
  • Occitan: -logia — branch of learning
  • Old English: -cræft — branch of learning
  • Persian: ـشناسی (-šenâsi) — branch of learning
  • Persian: ـلوژی (-loži) — branch of learning
  • Polish: -logia — branch of learning
  • Portuguese: -logia — branch of learning
  • Romanian: -logie — branch of learning
  • Romanian: -лоӂие (-logie) — branch of learning
  • Russian: -ло́гия (-lógija) — branch of learning
  • Russian: -ве́дение (-védenije) — branch of learning
  • Russian: -зна́ние (-znánije) — branch of learning
  • Northern Sami: -logiija — branch of learning
  • Sardinian: -logia — branch of learning
  • Serbo-Croatian: -ло̀гија — branch of learning
  • Serbo-Croatian: -lògija — branch of learning
  • Serbo-Croatian: -slovlje — branch of learning
  • Serbo-Croatian: -znanstvo — branch of learning
  • Sicilian: -luggìa — branch of learning
  • Slovak: -lógia — branch of learning
  • Slovene: -logija — branch of learning
  • Spanish: -logía — branch of learning
  • Sundanese: -logi — branch of learning
  • Swedish: -logi — branch of learning
  • Tagalog: -lohia — branch of learning
  • Tagalog: -lohiya — branch of learning
  • Tajik: -шиносӣ (-šinosi) — branch of learning
  • Tamil: -இயல் (-iyal) — branch of learning
  • Thai: -วิทยา (-wíttáyaa) — branch of learning
  • Thai: -ศาสตร์ (-sàat) — branch of learning
  • Turkish: -loji — branch of learning
  • Turkmen: -logiýa — branch of learning
  • Ukrainian: -ло́гія (-lóhija) — branch of learning
  • Urdu: یات (-iyāt) — branch of learning
  • Uyghur: ـشۇناسلىق (-shunasliq) — branch of learning
  • Uzbek: -shunoslik — branch of learning
  • Uzbek: -logiya — branch of learning
  • Vietnamese: học — branch of learning
  • Walloon: -lodjeye — branch of learning
  • Welsh: -eg — branch of learning
  • Welsh: -leg — branch of learning
  • Yiddish: ־לאָגיע (-logye) — branch of learning
  • Zazaki: -loci — branch of learning
  • German: -teiler — speech
  • Norwegian Bokmål: -logi — speech
  • Polish: -logia — speech