Hypural Hy*pu"ral, a. [Pref. hypo- + Gr. ? tail.] (Anat.) Under the tail; -- applied to the bones which support the caudal fin rays in most fishes. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • hypural — I. (ˈ)hī|pyu̇rəl adjective Etymology: hypo + ur (tail) + al : of, relating to, or constituting the bony structure chiefly formed of the expanded and more or less fused hemal spines of the last few vertebrae that supports the caudal fin rays in… …   Useful english dictionary

  • hypural — one of the flattened, fused bony haemal spines fanning out at the base of the caudal fin and bearing caudal rays. Amia has 10 hypurals, Salmo 7 but in most teleosts the number is reduced or fused into a single structure, the urostyle, q.v …   Dictionary of ichthyology

  • hypural — hy·pu·ral …   English syllables

  • hypural crease — hypural notch …   Dictionary of ichthyology

  • hypural fold — hypural notch …   Dictionary of ichthyology

  • hypural notch — the crease formed when the caudal fn is bent or flexed …   Dictionary of ichthyology

  • hypural plate — the series of bones supporting the caudal fin …   Dictionary of ichthyology

  • hypural spine — hypurapophysis …   Dictionary of ichthyology

  • hypural joint — noun The joint between the caudal fin of a fish and the last of its vertebrae …   Wiktionary

  • morphometric character — a measurement of a body part, e.g. head length; a character based on measurement. In fish, measurements are taken on a straight line basis, not around the curve of the body with the exception of such measurements specifically intended to measure… …   Dictionary of ichthyology

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