eyespot


eyespot
1. A colored spot or plastid (chromatophore) in a unicellular organism. 2. SYN: ocellus (1).

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eye·spot 'ī-.spät n
1) a simple visual organ of pigment or pigmented cells covering a sensory termination: OCELLUS
2) a small pigmented body of various unicellular algae

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n.
a small light-sensitive area of pigment found in some protozoans and other lower organisms.

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eye·spot (iґspot) 1. a light-sensitive pigmented spot with a visual function occurring in various invertebrates. See also stigma (def. 5) and ocellus (def. 1). 2. eye spot; see under spot.

Medical dictionary. 2011.

Look at other dictionaries:

  • Eyespot — can mean: * Eyespot (mimicry), a color mark that looks somewhat like an eye, sometimes called ocellus. * Eyespots, sensory organs in flatworms * Eyespot apparatus (or stigma ), a photoreceptive organelle found in the flagellate (motile) cells… …   Wikipedia

  • eyespot — [ī′spät΄] n. 1. a spot of color that looks like an eye 2. a small spot of pigment associated with sensitivity to light, found in many invertebrates …   English World dictionary

  • eyespot — /uy spot /, n. 1. a sensory organ of lower animals, having a light perceiving function. 2. an eyelike spot, as on the tail of a peacock; eye. 3. Plant Pathol. a disease of plants, characterized by elliptical lesions on the leaves and stems,… …   Universalium

  • eyespot — noun Date: 1862 1. a spot of color 2. a. a simple visual organ of pigment or pigmented cells covering a sensory termination ; ocellus b. a small pigmented body of various unicellular algae 3. any of several fungal diseases of cultivated grasses… …   New Collegiate Dictionary

  • eyespot — noun a) Any of various primitive light sensitive organs or regions in many diverse organisms. b) An eye like marking on the tail of a peacock or the wing of a butterfly …   Wiktionary

  • eyespot — n. (Biology) primitive eye like receptor that is light sensitive and helps orient an organism (in primitive single celled organisms) …   English contemporary dictionary

  • eyespot — noun 1》 Zoology a light sensitive pigmented spot on a flatworm, starfish, or other organism. 2》 a rounded eye like marking, especially on a butterfly or moth. 3》 a fungal disease of cereals and other grasses, characterized by yellowish oval spots …   English new terms dictionary

  • eyespot — n. a small light sensitive area of pigment found in some protozoans and other lower organisms …   The new mediacal dictionary

  • eyespot — eye•spot [[t]ˈaɪˌspɒt[/t]] n. 1) zool. a light sensitive group of cells or rudimentary visual structure of various algae and invertebrates 2) orn eye 16) …   From formal English to slang

  • eyespot — /ˈaɪspɒt/ (say uyspot) noun 1. a sensory organ of lower animals, having a light perceiving function. 2. an eye like spot, as on the tail of a peacock …   Australian English dictionary