Standard Lemma guide

photosensitivity

noun · 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

sensitivity to light, especially a heightened response to light

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

sensitivity to the action of radiant energy

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: radiosensitivity

Antonyms: none provided

Broader terms: sensitivity, sensitiveness, sensibility

History

Etymology

Etymology tree Proto-Indo-European *bheh2- Proto-Indo-European *bhéh2os Proto-Hellenic *pháwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- English sensitivity English photosensitivity From photo- + sensitivity.

Across languages

Translations

4 source translations are retained for this English entry.

  • Bulgarian: фоточувствителност (fotočuvstvitelnost) — sensitivity to light
  • Bulgarian: чувствителност към светлина (čuvstvitelnost kǎm svetlina) — sensitivity to light
  • Icelandic: ljósnæmi — sensitivity to light
  • Polish: światłoczułość — sensitivity to light