American Heritage® Dictionary of the English Language, Fourth Edition
- n. Biology A stiff hair, bristle, or bristlelike process or part on an organism.
- n. Biology The stalk of a moss capsule.
Century Dictionary and Cyclopedia
- n. In zoology and anatomy, a bristle; a chæta; a stiff, stout hair; a fine, slender spine or prickle; any setaceous appendage. One of the bristles of swine and other mammals. See
- n. In botany, a bristle of any sort; a stiff hair; a slender, straight prickle; also, the stalk that supports the theca, capsule, or sporangium of mosses.
GNU Webster's 1913
- n. (Biol.) Any slender, more or less rigid, bristlelike organ or part; as the hairs of a caterpillar, the slender spines of a crustacean, the hairlike processes of a protozoan, the bristles or stiff hairs on the leaves of some plants, or the pedicel of the capsule of a moss.
- n. One of the movable chitinous spines or hooks of an annelid. They usually arise in clusters from muscular capsules, and are used in locomotion and for defense. They are very diverse in form.
- n. One of the spinelike feathers at the base of the bill of certain birds.
- n. stalk of a moss capsule
- n. a stiff hair or bristle
- From Latin seta, from saeta. (Wiktionary)
- Latin saeta, sēta, bristle. (American Heritage® Dictionary of the English Language, Fourth Edition)
“We discovered that the seta is 10 times more adhesive than predicted from prior measurement on whole animals.”
“The seta is short, the capsule being usually raised upon the archegoniophore.”
“In the Jubuloideae, which in other respects form a well-marked group, the seta is short and the elaters extend from the upper part of the capsule to the base; at dehiscence they remain fixed to the valves into which the capsule splits.”
“There is great variety in the length of the seta, which is sometimes practically absent.”
“The mayor did not seta speed record, however, in dismissing a commissioner who did not work out.”
“We took a single gecko foot hair (seta) and made the first direct measurement of its adhesive function ...”
“The adhesive is so strong that a single seta can lift the weight of an ant 200 µN = 20 mg.”
“We used a microscopic force sensor designed by Tom Kenny at Stanford to measure the tiny forces of adhesion of the gecko seta.”
“Each seta, in turn, is divided at the end into approximately a thousand tiny spatulae (yes, you guessed why they are called that), which are about 200 billlionths of a meter wide, which is smaller than the wavelength of visible light.”
“We found that if we increased the angle the seta makes to the surface, it just pops off [source]”
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