| 释义 |
▪ I. bisect, v.|baɪˈsɛkt|
Also 7 bissect.
[Apparently of Eng. formation, from bi-, bis- two + sect- ppl. stem of secāre to cut: cf. intersect, etc.]
1. trans. To cut or divide into two equal parts. (The earlier and usual sense.)
1646Sir T. Browne Pseud. Ep. 292 The rationall Horizon..bissecteth the Globe into equall parts. 1660Barrow Euclid i. x, To bisect a right line. 1879Wallace Australas. xviii. 347 Borneo is nearly bisected by the equator.
2. To cut in two, divide into any two parts.
1789Bentham Princ. Legisl. xviii. §56 The logical whole..has been bisected in as many different directions as were necessary. 1853Grote Greece ii. lxxxv. XI. 249 Attacking them while thus disarrayed and bisected by the river.
3. intr. To divide in two; to fork.
1870Daily News 5 Oct., On the chaussée just before it bisects, is a village named Belle-Croix.
▪ II. bisect, n. Ecol.|ˈbaɪsɛkt|
[f. bisect v.]
(See quots.)
1916F. E. Clements Plant Succession xv. 432 It is proposed to indicate the vertical and lateral relations of individuals by means of a cross-section showing both shoots and roots in their normal position. Such a cross-section may be termed a bisect. 1919J. E. Weaver Ecol. Relations Roots 32 Schematic bisect showing the root and stem relations of..prairie plants. 1926Tansley & Chipp Stud. Vegetation iv. 66 When a profile chart includes the root systems of the plants it is called a bisect. 1962H. Hanson Dict. Ecol. 55 Bisect, a line transect which shows the vertical and lateral distribution of roots along the side of a trench in the soil and the above-ground parts of the plants along the line. |