pigment spot

См. также в других словарях:

• spot — 1. SYN: macula. 2. To lose a slight amount of blood through the vagina. acoustic spots macula of utricle, macula of saccule. Bitot spots small, circumscribed, lusterless, grayish white, foamy, greasy, triangular deposits on the bulbar …   Medical dictionary

• spot — 1) a well defined circular or sub circular mark or pigment; 2) a school of fish 3) a shoal frequented by fish …   Dictionary of ichthyology

• Yellow spot — Yellow Yel low (y[e^]l l[ o]), a. [Compar. {Yellower} (y[e^]l l[ o]*[ e]r); superl. {Yellowest}.] [OE. yelow, yelwe, [yogh]elow, [yogh]eoluw, from AS. geolu; akin to D. geel, OS. & OHG. gelo, G. gelb, Icel. gulr, Sw. gul, Dan. guul, L. helvus… …   The Collaborative International Dictionary of English

• Eye-spot — n. (Zo[ o]l.) (a) A simple visual organ found in many invertebrates, consisting of pigment cells covering a sensory nerve termination. (b) An eyelike spot of color. [1913 Webster] …   The Collaborative International Dictionary of English

• St. Peter's spot — a pigment blotch near the rear of the dorsal fin in juvenile Sarotherodon galilaeus, a tilapia, from Lake Galilee. Supposedly the thumb mark of St. Peter where he picked up the fish and removed a piece of money from its mouth. Actually correlates …   Dictionary of ichthyology

• black-spot disease — the encysted intermediate, metacercarial life history stage of a strigeid trematode (Uvulifer ambloplitis, and also Cryptocotyle lingula) found in a fish s skin, gills and eyes. The skin develops black to brown pigment over the cysts forming the… …   Dictionary of ichthyology

• Simple eye in invertebrates — For eye like markings, see eyespot (mimicry). Ocellus redirects here. For the Celtic god, see Ocelus. Head of Polistes A simple eye (sometimes called a pigment pit[1] …   Wikipedia

• Jellyfish — For other uses, see Jellyfish (disambiguation). Jellyfish Temporal range: 505–0 Ma …   Wikipedia

• Starfish — For other uses, see Starfish (disambiguation). Asteroidea redirects here. For the Asteraceae subfamily, see Asteroideae. Sea Stars Temporal range: Ordovician–Recent …   Wikipedia

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• VISION (physiologie) — L’univers sensoriel de l’Homme est essentiellement visuel: telle est probablement la raison pour laquelle la physiologie de la vision occupe une place si considérable dans l’ensemble de la physiologie sensorielle. Depuis les années trente, qui… …   Encyclopédie Universelle