01 n. The act of nodding.
-
1.
The act of nodding.“So from the midmost the nutation spreads, Round and more round, o'er all the sea of heads.” — Pope.
-
2.
A very small libratory motion of the earth's axis, by which its inclination to the plane of the ecliptic is constantly varying by a small amount.(Astron.)
-
3.
The motion of a flower in following the apparent movement of the sun, from the east in the morning to the west in the evening.(Bot.)