1
- with obj. emit (energy, especially light or heat) in the form of rays or waves发射（光、热等能量）：
the hot stars radiate energy.
灼热的恒星发射出能量。
1.1
- no obj., with adverbial of direction(of light, heat, or other energy) be emitted in such a way（光、热等能量）辐射; 发散; 传播：
the continual stream of energy which radiates from the sun.
太阳连续发散出的能量流。
1.2
- (of a person) clearly emanate (a strong feeling or quality) through their expression or bearing（人）流露, 显示, 焕发（强烈情感或气质）：
she lifted her chin, radiating defiance.
她抬起下巴, 一脸的不服神态。
1.3
radiate from
(of a feeling or quality) emanate clearly from（情感, 气质）发源于：leadership and confidence radiate from her.
她身上透出领导气质和信心。
2
- no obj., with adverbial of direction diverge or spread from or as if from a central point呈辐射状发出, 从中心发散：
he ran down one of the passages that radiated from the room.
房间通向各方, 他沿着一个通道跑了。
2.1
- Biology (of an animal or plant group) evolve into a variety of forms adapted to new situations or ways of life【生】（动物或植物群）辐射形进化。
- rare having rays or parts proceeding from a centre: arranged in or having a radial pattern〈罕〉辐射（状）的, 辐射对称的, 放射形的; 光芒四射的：
the radiate crown.
光芒四射的王冠。
派生词
radiative
adjective （限义项1）词源
early 17th cent.: from Latin radiat- 'emitted in rays', from the verb radiare, from radius 'ray, spoke'.