Ommatidium — Ommatidium: A – cornea, B – crystalline cone, C D – pigment cells, E – rhabdom, F – photoreceptor cells, G – membrana fenestrata, H – optic nerve The compound eyes of insects, mantis shrimp and millipedes[1] are composed of units called ommatidia … Wikipedia
Ommatidium — Om ma*tid i*um, n.; pl. {Ommatidia}. [NL., dim. of Gr. ?, ?, the eye.] (Zo[ o]l.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates; one of the eyes of an ommateum. [1913 Webster] … The Collaborative International Dictionary of English
Ommatidĭum — (neulat.), das Einzelauge eines Facettenauges … Meyers Großes Konversations-Lexikon
ommatidium — [äm΄ə tid′ē əm] n. pl. ommatidia [ModL, dim. < Gr omma (gen. ommatos), the eye, akin to ōps,EYE] any of the structuralelements forming the compound eye of an insect, many crustaceans, etc.: each element is a complete photoreceptor in itself,… … English World dictionary
Ommatidium — Ommatidien (von spätgriech. ommatidion = „Äugelchen“) sind die Einzelaugen, aus denen die Facettenaugen der Gliederfüßer, darunter die Insekten und Krebstiere, zusammengesetzt sind. Je nach Art besteht ein Facettenauge aus nur einzelnen bis… … Deutsch Wikipedia
ommatidium — noun (plural ommatidia) Etymology: New Latin, from Greek ommat , omma eye; akin to Greek ōps eye more at eye Date: 1884 one of the elements corresponding to a small simple eye that make up the compound eye of an arthropod • ommatidial adjective … New Collegiate Dictionary
Ommatidium — Œil composé Pour les articles homonymes, voir Œil (homonymie). Les yeux composés d une libellule Un œil composé, ou œil à facettes … Wikipédia en Français
ommatidium — n.; pl. ia [Gr. ommation, little eye; idion, dim.] (ARTHROPODA) One of the component units of a compound eye, consisting essentially of an optical (light gathering) part and a sensory part (perceiving and transforming into electrical energy); a… … Dictionary of invertebrate zoology
ommatidium — (= ommatidia (plural) ) Single facet of an insect compound eye. Composed of a set of photoreceptor cells, overlain by a crystalline lens … Dictionary of molecular biology
ommatidium — ommatidial, adj. /om euh tid ee euhm/, n., pl. ommatidia / tid ee euh/. Zool. one of the radial elements composing a compound eye. [1880 85; < NL < Gk ommat (s. of ómma eye) + NL idium IDIUM] * * * … Universalium
