| 释义 |
triradius|traɪˈreɪdɪəs|
Pl. -radii.
[f. tri- + radius.]
In dermatoglyphics, a point from which the dermal ridges radiate in three directions at angles of approx. 120 degrees.
1960New Scientist 14 July 129 (caption) A finger-print on which a white line has been drawn joining the core of the pattern..to the associated triradius. 1965Ibid. 11 Feb. 345/2 There are discontinuities [in the fingerprint pattern], known technically as ‘triradius points’, where three ridges meet at a single junction. 1970[see loop n.1 4 h]. 1971J. Z. Young Introd. Study Man xxxix. 570 For genetic analysis counts are made from the triradius to the centre of the pattern. 1977Sci. Amer. Dec. 141/1 The resulting patterns are known to the dermatologist respectively as loops, triradii and whorls. |