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Related to verticil: vertical definition


A circular arrangement, as of flowers, leaves, or hairs, growing about a central point; a whorl.

[Latin verticillus, the whorl of a spindle, diminutive of vertex, vertic-, highest point; see vertex.]


(Biology) biology a circular arrangement of parts about an axis, esp leaves around a stem
[C18: from Latin verticillus whorl (of a spindle), from vertex]


(ˈvɜr tə sɪl)

a whorl of leaves around a point on an axis.
[1695–1705; < Latin verticillus spindle whorl derivative of vertex vertex]
ver•tic•il•late (vərˈtɪs ə lɪt, -ˌleɪt, ˌvɜr təˈsɪl eɪt, -ɪt)


 a number or set of organs or parts of items arranged in a circle or round an axis, 1793.
Examples: verticil of beads, 1703; of branches, 1881; of leaves, 1872.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.verticil - a whorl of leaves growing around a stemverticil - a whorl of leaves growing around a stem
curl, curlicue, gyre, ringlet, scroll, whorl, coil, roll - a round shape formed by a series of concentric circles (as formed by leaves or flower petals)
References in periodicals archive ?
1A): 12-segmented, relatively short, if bent backward not extending to the stalk of halters; scape black, elongated, cylindrical; pedicel black, very short, cup-shaped; flagellum black, long-cylindrical, basally expanded, each of flagellomere subequal in length; verticils black, dorsal verticils subequal to the corresponding flagellomeres from which they arise.
The conidiophores consisted of terminal divaricate verticils and metullae originated from apex of conidiophores in groups of 4-5 bearing phialids arranged in verticils of 4-6.
The combination of a spiciform inflorescence with a fragile rachis, bearing verticils of 4-6 spikelets, the spikelets with single unisexual flowers, the pistillate ones disarticulating below the glumes, along with a set of other unifying features, is good evidence that Parianeae represent a natural group (Clayton & Renvoize, 1986; Hollowell, 1987).