Century Dictionary and Cyclopedia
- n. One of the rudimentary sensory organs of many low animals which have been supposed to have a visual function. See eye, and cut under Balanoglossus.
- n. The rudiment of an eye in the embryo of higher animals.
- n. An ocellus.
- n. In certain unicellular algæ, as Volvox, a (usually) reddish spot thought to resemble an eye in position and appearance.
- n. An ocellated or eye-like spot, as those on the tail of a peacock.
- n. Same as eyehole, 3.
GNU Webster's 1913
- n. A simple visual organ found in many invertebrates, consisting of pigment cells covering a sensory nerve termination.
- n. An eyelike spot of color.
- n. an eyelike marking (as on the wings of some butterflies); usually a spot of color inside a ring of another color
“The orange flashes with their white eye-spot markings on the gatekeeper's wings seem to turn a key in something.”
“When this is completed they are fixed for life: their legs are now converted into prehensile organs; they again obtain a well-constructed mouth; but they have no antennæ, and their two eyes are now reconverted into a minute, single, simple eye-spot.”
“The endoplasm usually, but not always, contains a bright red eye-spot.”
“A bright-red eye-spot may or may not be present; when present it is placed near the junction of the two furrows.”
“Body plastic; no chromatophores; Family _Astastidæ_ no eye-spot”
“Body plastic; usually with Family _Euglenidæ_ chromatophores and eye-spot”
“The bottom of the eye-spot was dark only about one-fourth the way, the remaining three-fourths, tan colour outlined at the top with pale blue and black in fine lines.”
“Each eye-spot was in a yellow field, strongly circled with a sharp black line; then a quarter of an inch band of yellow; next a heliotrope circle of equal width; yellow again twice as wide; then a faint heliotrope line; and last a very narrow edging of white.”
“Each had, for its size, an immense black eye-spot, with a blue pupil covering three-fourths of it, crossed by a perfect comma of white, the heads toward the front wings and the curves bending outward.”
“The back wings were similar to the female's, only of stronger colour, and more distinct markings; the eye-spot and lining appeared as if they had been tinted with strong fresh paint, while the edges of the wings lying beside the abdomen had the long, silken hairs of”
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