English-Thai Dictionary
nutation
N การ ก้มหัว ลง การเคลื่อนไหว ของ พืช ระหว่าง เจริญเติบโต การ เอียง ลาด ที่ เปลี่ยนแปลง ของ แกน กล้อง
Webster's 1828 Dictionary
NUTATION
n.[L., a nodding, to nod. ] In astronomy, a kind of tremulous motion of the axis of the earth, by which in its annual revolution it is twice inclined to the ecliptic, and as often returns to its former position.
Webster's 1913 Dictionary
NUTATION
Nu *ta "tion, n. Etym: [L. nutatio a nodding, fr. nutare to nod: cf. F.nutation. ]
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. (Astron.)
Defn: 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.
3. (Bot. ) (a ) 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. (b ) Circumnutation.
New American Oxford Dictionary
nutation
nu ta tion |n (y )o͞oˈtāSHən n (j )uˈteɪʃən | ▶noun a periodic variation in the inclination of the axis of a rotating object. • Astronomy a periodic oscillation of the earth's axis that causes the precession of the poles to follow a wavy rather than a circular path. • Botany the circular swaying movement of the tip of a growing shoot. ORIGIN early 17th cent. (denoting nodding of the head ): from Latin nutatio (n- ), from nutare ‘to nod. ’
Oxford Dictionary
nutation
nutation |njuːˈteɪʃ (ə )n | ▶noun [ mass noun ] 1 a periodic variation in the inclination of the axis of a rotating object. • Astronomy a periodic oscillation of the earth's axis which causes the precession of the poles to follow a wavy rather than a circular path. 2 Botany the circular swaying movement of the tip of a growing shoot. ORIGIN early 17th cent. (denoting nodding of the head ): from Latin nutatio (n- ), from nutare ‘to nod ’.
Duden Dictionary
Nutation
Nu ta ti on Substantiv, feminin , die |Nutati o n |lateinisch ; »das Schwanken «1 Botanik selbsttätige, ohne äußeren Reiz ausgeführte Wachstumsbewegung der Pflanze 2 Astronomie Schwankung der Erdachse gegen den Himmelspol
The Wordsmith Dictionary