nutation

名词 n.
中文释义

英文释义

名词 n.
  1. A bobbing motion that accompanies the precession of a spinning rigid body. countable,uncountable
  2. A nodding motion (of the head etc.). countable,uncountable
  3. Any of several irregularities in the precession of the equinoxes caused by varying torque applied to the Earth by the Sun and the Moon. countable,uncountable
  4. The circular motion of the tip of a growing shoot. countable,uncountable

词形变化

nutations plural

词汇关系

衍生词
circumnutation nutational counternutation nutate revolving nutation

词源

1610s, from Latin nūtātiō (“nodding”), from nūtō (“to nod”). Compare mutation.
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