Difference between revisions of "radius"
From ZooTerms (Dictionary of Invertebrate Zoology)
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|lexical category=noun; plural <b>radii</b> | |lexical category=noun; plural <b>radii</b> | ||
|etymology=Latin <i>radius</i>, ray | |etymology=Latin <i>radius</i>, ray | ||
| − | |definition=1. In radially symmetrical animals, the primary axis of symmetry. | + | |definition=1. In radially symmetrical animals, the [[primary]] [[axis]] of [[symmetry]]. |
| − | 2. ([[Echinodermata]]: Crinoidea) One of 5 reference planes passing through the polar or central axis and median line. | + | 2. ([[Echinodermata]]: [[Crinoidea]]) One of 5 reference planes passing through the polar or central [[axis]] and [[median]] line. |
| − | 3. ([[Arthropoda]]) <i>a.</i> In Crustacea (sessile barnacles), the lateral part of a compartmental plate when marked off from the median triangular area by change in direction of growth lines. <i>b.</i> In [[Insecta]], the third longitudinal wing vein. | + | 3. ([[Arthropoda]]) <i>a.</i> In [[Crustacea]] ([[sessile]] barnacles), the [[lateral]] part of a [[compartmental plate]] when marked off from the [[median]] triangular [[area]] by change in direction of [[growth lines]]. <i>b.</i> In [[Insecta]], the third [[longitudinal]] [[wing]] vein. |
| + | }} | ||
[[Category:Disambiguation page necessary]] | [[Category:Disambiguation page necessary]] | ||
| + | {{Concept scheme relation | ||
| + | |scheme=Dictionary of Invertebrate Zoology | ||
}} | }} | ||
Latest revision as of 23:41, 13 September 2013
radius (noun; plural radii; Latin radius, ray): 1. In radially symmetrical animals, the primary axis of symmetry.2. (Echinodermata: Crinoidea) One of 5 reference planes passing through the polar or central axis and median line.
3. (Arthropoda) a. In Crustacea (sessile barnacles), the lateral part of a compartmental plate when marked off from the median triangular area by change in direction of growth lines. b. In Insecta, the third longitudinal wing vein.
