Standard Lemma guide

phosphorous

adj · noun · 5 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.

  • US: Recorded audio is listed in the source snapshot.
  • homophone: phosphorus
  • CMU ARPABET: F AA1 S F ER0 AH0 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Of or pertaining to phosphorus.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: phosphoric

Antonyms: none provided

2

adj

Meaning 2

Resembling phosphorus.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: phosphoric

Antonyms: none provided

3

adj

Meaning 3

Of, relating to, or containing trivalent phosphorus.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Misspelling of phosphorus.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, misspelling, proscribed, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adjective

Meaning 5

containing or characteristic of phosphorus

Definition source: Princeton WordNet 3.0

Examples

  • phosphoric acid

Meaning relationships

Synonyms: phosphoric

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *bheh2- Proto-Indo-European *bhéh2os Proto-Hellenic *pháwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Proto-Indo-European *bher- Proto-Indo-European *bhéreti Proto-Hellenic *phérō Ancient Greek φέρω (phérō) Proto-Indo-European *-os Proto-Hellenic *-os Ancient Greek -ος (-os) Ancient Greek -φόρος (-phóros) Ancient Greek φωσφόρος (phōsphóros)bor. Latin phōsphorusbor. English phosphorus Proto-Indo-European *h3ed- Proto-Indo-European *-os Proto-Indo-European *h3édosder.? Proto-Italic *-ŏ̄dsos? Old Latin -ōssus Latin -ōsus Old French -usbor. Middle English -ous English -ous English phosphorous From phosphorus + -ous.

Across languages

Translations

21 source translations are retained for this English entry.

  • Bulgarian: фосфорен (fosforen) — of or pertaining to phosphorus
  • Catalan: fosforós — of or pertaining to phosphorus
  • Danish: fosforholdig — of or pertaining to phosphorus
  • French: phosphoreux — of or pertaining to phosphorus
  • French: phosphorique — of or pertaining to phosphorus
  • French: phosphorescent — of or pertaining to phosphorus
  • French: phosphorescente — of or pertaining to phosphorus
  • Portuguese: fosforoso — of or pertaining to phosphorus
  • Danish: fosforlignende — resembling phosphorus
  • French: phosphoreux — resembling phosphorus
  • French: phosphorique — resembling phosphorus
  • French: phosphorescent — resembling phosphorus
  • French: phosphorescente — resembling phosphorus
  • Bulgarian: съдържащ тривалентен фосфор (sǎdǎržašt trivalenten fosfor) — of, relating to or containing trivalent phosphorus
  • Danish: fosforsyrlig — of, relating to or containing trivalent phosphorus
  • Dutch: fosforig — of, relating to or containing trivalent phosphorus
  • French: phosphoreux — of, relating to or containing trivalent phosphorus
  • French: phosphorique — of, relating to or containing trivalent phosphorus
  • French: phosphorescent — of, relating to or containing trivalent phosphorus
  • French: phosphorescente — of, relating to or containing trivalent phosphorus
  • Italian: fosforoso — of, relating to or containing trivalent phosphorus