Definition of whorl

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Whorl (n. & v.) A volution, or turn, of the spire of a univalve shell..

Lern More About Whorl

Discoid :: Discoid (a.) Having the form of a disk, as those univalve shells which have the whorls in one plane, so as to form a disk, as the pearly nautilus..
Scepterellate :: Scepterellate (a.) Having a straight shaft with whorls of spines; -- said of certain sponge spicules. See Illust. under Spicule.
Involucre :: Involucre (n.) A whorl or set of bracts around a flower, umbel, or head..
Sinistral :: Sinistral (a.) Having the whorls of the spire revolving or rising to the left; reversed; -- said of certain spiral shells.
Whorl :: Whorl (n. & v.) A volution, or turn, of the spire of a univalve shell..
Solarium :: Solarium (n.) Any one of several species of handsome marine spiral shells of the genus Solarium and allied genera. The shell is conical, and usually has a large, deep umbilicus exposing the upper whorls. Called also perspective shell..
Whorl :: Whorl (n. & v.) A circle of two or more leaves, flowers, or other organs, about the same part or joint of a stem..
Turbinated :: Turbinated (a.) Spiral with the whorls decreasing rapidly from a large base to a pointed apex; -- said of certain shells.
Turreted :: Turreted (a.) Furnished with a turret or turrets; specifically (Zool.), having the whorls somewhat flattened on the upper side and often ornamented by spines or tubercles; -- said of certain spiral shells..
Exogen :: Exogen (n.) A plant belonging to one of the greater part of the vegetable kingdom, and which the plants are characterized by having c wood bark, and pith, the wood forming a layer between the other two, and increasing, if at all, by the animal addition of a new layer to the outside next to the bark. The leaves are commonly netted-veined, and the number of cotyledons is two, or, very rarely, several in a whorl. Cf. Endogen..
Verticillus :: Verticillus (n.) A whorl; a verticil.
Turban :: Turban (n.) The whole set of whorls of a spiral shell.
Joe-pye Weed :: "Joe-Pye weed () A tall composite plant of the genus Eupatorium (E. purpureum), with purplish flowers, and whorled leaves..
Chara :: Chara (n.) A genus of flowerless plants, having articulated stems and whorled branches. They flourish in wet places..
Volution :: Volution (n.) A whorl of a spiral shell.
Woodroof :: Woodroof (n.) A little European herb (Asperula odorata) having a pleasant taste. It is sometimes used for flavoring wine. See Illust. of Whorl.
Paucispiral :: Paucispiral (a.) Having few spirals, or whorls; as, a paucispiral operculum or shell..
Spire :: Spire (n.) A spiral; a curl; a whorl; a twist.
Turrilite :: Turrilite (n.) Any fossil ammonite of the genus Turrilites. The shell forms an open spiral with the later whorls separate.
Turritella :: Turritella (n.) Any spiral marine gastropod belonging to Turritella and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum..
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