| 释义 |
pulsatile, a.|ˈpʌlsətɪl, -aɪl|
Also 6 -yle, 7 -il.
[f. L. type *pulsātilis, f. pulsāre, pulsāt-: see prec. and -ile.]
1. Anat. and Physiol. Having the capacity or property of pulsating or throbbing, as the heart, an artery, a tumour, etc.; exhibiting pulsation.
† pulsatile vein, old name for an artery, spec. the aorta.
1541R. Copland Guydon's Quest. Chirurg. H j b, The braunche of the vayne pulsatyle that commeth fro the left syde. 1684tr. Bonet's Merc. Compit. i. 11 You could no sooner press this Pulsatile Tumour with your Fingers, but [etc.]. 1858H. Spencer Ess. I. 332 Every heart is at first a mere pulsatile sac. 1872Mivart Elem. Anat. x. (1873) 432 Such pulsatile structures are called lymphatic hearts.
b. Of, or characterized by, pulsation; pulsatory.
1684J. P. tr. Fambresarius' Art Physic i. 64 Under the Pulsatil Actions are comprehended the Motions of the heart. 1728Nicholls in Phil. Trans. XXXV. 444 Such a Tumor will rather have a pulsatile Dilatation, than a Pulsation, for its true Diagnostick. 1897Allbutt's Syst. Med. IV. 647 Instances..of the common tendency towards ‘pulsatile or rhythmic activity’ manifested by all living matter.
2. Of a musical instrument: Played by striking or percussion; percussive: see percussion 2 c.
1769Mus. Dict. 194 (T.) The rattle, among the ancients, is a musical instrument of the pulsatile kind. 1864Engel Mus. Anc. Nat. 102 The Assyrians employed in their musical performances stringed, wind, and pulsatile instruments in combination. 1887Athenæum 5 Nov. 612/3 The ‘pulsatile instruments covered with skin’ begin with the hymnal Mridanga, said to be invented by Brahma himself, and its modern form, the Bánya and Tabla.
Hence pulsatility |-ˈtɪlɪtɪ|, the quality of being pulsatile (sense 1).
1835–6Todd's Cycl. Anat. I. 243/1 The distinguishing characteristic of the third form of nævus is its pulsatility. Ibid. 460/2 A pulsatility scarcely inferior to that of an aneurism. 1930Amer. Jrnl. Physiol. XCI. 716 The venous return to the chest must show a pulsatility which is nearly synchronous with the pulsatile outflow. 1977Lancet 3 Sept. 490/2 They observed that the peak venous flow can be increased seven-fold, and its pulsatility thirty fold. |