| 释义 |
siphuncle Zool.|ˈsaɪfʌŋk(ə)l|
[ad. L. sīphunculus, dim. of sīpho siphon.]
1. A small canal or tube traversing and connecting the shell-chambers in certain cephalopods; = siphunculus, and siphon n. 3 a.
1822J. Parkinson Outl. Oryctol. 161 The most important part of this organ, the continuous siphuncle. 1862Kearley Links in Chain v. 103 A membranous tube termed the Siphuncle, which originating in the body of the nautilus in the outer chamber passes through all the partitions in succession. 1870H. A. Nicholson Man. Zool. li. (1875) 368 The function of the siphuncle is unknown, except in so far as it doubtless serves to maintain the vitality of the shell.
transf.1866Blackmore Cradock Nowell xxxv. (1883) 213 This flint has traversing it from pole to pole a thread, a spindle, a siphuncle of the richest golden hue.
2. Ent. A small siphon or suctorial organ; spec. = siphunculus 2.
1826Kirby & Sp. Entomol. III. xxxiii. 363 Replaced by an exarticulate retractile tube, which exerts a retractile siphuncle. Ibid. xxxiv. 472 The siphuncle, which is the suctorious part, being first retracted within the tubulet. 1899Cambr. Nat. Hist. VI. 589 Another highly peculiar structure [in aphids] is the siphons, frequently called nectaries, honey-tubes, or siphuncles. 1962G. A. Tulloch J. R. de la Torre-Bueno's Gloss. Entomol. (rev. ed.) 268 Siphuncle, the cornicle of the aphids. |