| 释义 |
pericentre|pɛrɪˈsɛntə(r)|
[f. peri- + centre, after perihelion.]
That point, in the (eccentric) orbit of a body revolving around a centre, at which it is nearest to that centre.
1902Newcomb Study Univ. 159 The point nearest the latter is called the periastron or pericentre, and corresponds to the perihelion of a planetary orbit.
So periˈcentral, a. = pericentric a. 1.
1889Bennett & Murray Cryptog. Bot. 192 These pericentral tubes are often connected with one another and with the axial cell by threads of protoplasm. 1890Cent. Dict., Pericentral tubes, in bot., in the so-called polysiphonous seaweeds, the ring of four or more elongated cells surrounding the large central elongated cells. |