| 释义 |
▪ I. flex, v.|flɛks|
[f. L. flex- ppl. stem of flectĕre to bend.]
trans. To bend. Now chiefly in scientific use, esp. with reference to the bending of a joint or limb by the action of the flexor muscles (opposed to extend), and Geol. with reference to strata.
a1521Helyas in Thoms Prose Rom. (1828) III. 13 With his knees flexed he prostened him. 1560Rolland Crt. Venus ii. 943 Richt fair scho hes me flext. 1572J. Bossewell Armorie iii. 20 b, This worme is here figured with the tayle flexed vnder his chinne. 1834M'Murtrie Cuvier's Anim. Kingd. 357 The tarsi..can only be flexed on the tibiæ. 1845Todd & Bowman Phys. Anat. I. 169 A single muscle..flexes the thigh. 1879Dana Man. Geol. (ed. 3) 155 The whole series has been upturned and flexed, broken and displaced. 1912L. J. Vance Destroying Angel xiii. 160 Tensing and flexing his tired muscles while his eyes shifted quickly from one quarter to another. 1926R. Macaulay Crewe Train ii. ix. 167 Flexed her toes against the rock's level face, and drew herself up. 1947R. Allen Home made Banners iii. 16 It dedicated its soul to the war and flexed its muscles for the war, and then there was a pause.
Add:2. intr. To bend or be capable of bending. Of a muscle: to contract. Also, = to flex one's muscles. orig. U.S.
1909in Webster. 1922Daily Mail 4 Nov. 12 (Advt.), The tyre flexes to road obstructions instead of bounding over them. 1953C. A. Lindbergh Spirit of St. Louis ii. vi. 190, I glance up at the heavily loaded wings... The tips flex up and down too far for comfort. 1972J. Berger G iv. 87 He saw the muscles along its shoulders and down its haunches flex as it zigzagged. 1985Bodypower Oct. 51d/1 (Advt.), At every show his incredible thighs have the audience screaming every time he flexes! 1991Alaska Apr. 43/2 A stone face suddenly turned rubber that flexed from panic to defiance, hope to despair.
▪ II. flex, n.1 Math.|flɛks|
[f. L. flexus, f. flectere to bend.]
A point of inflexion (see inflexion, inflection 3).
1866A. Cayley in Q. Jrnl. Pure & Appl. Math. VII. 213 The stationary ineunt, or cusp, considered as..a particular case of the double ineunt, is a spinode; to render this notation symmetrical, we require certain new terms, say link, as the correlative to node, and flex as the correlative to cusp... The ordinary singularities of a plane curve would thus be the node, the cusp, the link, and the flex. 1950H. G. Forder Geometry ix. 152 The line which joins two flexes of a cubic goes through a third flex.
▪ III. flex, n.2|flɛks|
[Abbrev. of flexible n.]
Flexible low-current electric cable consisting of two or more stranded conductors separately insulated, used esp. for connections to electric lamps and portable domestic appliances.
1905C. C. Metcalfe Pract. Electr. Wiring vii. 104 Flexible cord, generally known in the wiring trade as ‘Flex’, consists of two flexible conductors laid together, each insulated from the other. 1907Install. News July 10/2 A flat piece of vulcanite..provided with three holes, the bottom two being used to take the flex. 1922Daily Mail 18 Dec. 1 Electric iron, complete with flex cord and adaptor. 1966Electricity at Work Sept., In a 2 core flex there is no earth core. 1967P. Honey Househ. Electr. 65 Never run flexes under a carpet.
▪ IV. flex(e
obs. form of flax. |