Standard Lemma guide
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.
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adj
Of or pertaining to the retina.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable, relational
Topics: medicine, ophthalmology, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A yellow to orange aldehyde derived from vitamin A that is formed from rhodopsin by the action of light and in combination with proteins forms the visual pigments of the retinal rods and cones.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, organic-chemistry, physical-sciences
No example sentence was provided for this meaning.
Synonyms: retinaldehyde, retinene
Antonyms: none provided
adjective
in or relating to the retina of the eye
Definition source: Princeton WordNet 3.0
Synonyms: none provided
Antonyms: none provided
noun
either of two yellow to red retinal pigments formed from rhodopsin by the action of light
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: retinene
Antonyms: none provided
Broader terms: pigment
History
Etymology tree English retina Proto-Indo-European *h2el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English retinal From retina + -al (“of or pertaining to”).
Etymology tree English retina Akkadian 𒎎𒋆𒁉𒍣𒁕 (guḫlum)bor. Aramaic כוחלא (kuḥlā)bor. Arabic كُحْل (kuḥl) Andalusian Arabic اَلْكُحُول (al-kuḥūl)bor. Latin alcoholder. Proto-Indo-European *de Proto-Indo-European *-h1 Proto-Indo-European *déh1 Proto-Italic *dē Latin dē Latin de-der. Proto-Indo-European *wed- Proto-Indo-European *-r̥ Proto-Indo-European *wódr̥ Proto-Hellenic *údōr Ancient Greek ῡ̆̔́δωρ (hū̆́dōr) Ancient Greek ῠ̔δρο- (hŭdro-)der. German Aldehydbor. English aldehydeclip. English -al English retinal From retina + -al (“aldehyde”).
Across languages
9 source translations are retained for this English entry.
