retinal

From retina +‎ -al (“of or pertaining to”).

• (Received Pronunciation) IPA^(key): /ˈɹɛt.ɪn.əl/
• (General American) IPA^(key): /ˈɹɛt.ən.əl/, /ˈɹɛt.nəl/
• Rhymes: -ɛtɪnəl

retinal (not comparable)

1. (ophthalmology, relational) Of or pertaining to the retina.

Structure diagram of retinal (carotenoid pigment)

From retina +‎ -al (“aldehyde”).

• (General American) IPA^(key): /ˈɹɛt.əˌnæl/, /ˈɹɛt.əˌnɔl/
• Rhymes: -ɛtɪnæl

retinal (countable and uncountable, plural retinals)

1. (biochemistry, organic chemistry) 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.

   Synonyms: retinaldehyde, retinene

• neoretinal

• “retinal”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “retinal”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

• -traline, Latiner, art line, entrail, larnite, latrine, line art, ratline, reliant, trainel, trenail

retinal (not comparable)

1. retinal

• retina

• IPA^(key): /retiˈnal/ [re.t̪iˈnal]
• Rhymes: -al
• Syllabification: re‧ti‧nal

retinal m or f (masculine and feminine plural retinales)

1. retinal