noddytern (noditern)

Same as noddy1, 2. node (nod), п. [ or organ. Specifically - (a) The basal segment of an insect's abdomen when it is short and strongly constricted before and behind, so as to be distinctly separated, not only from the thorax, but from the rest of the abdomen. The term is especially used in describing ants, some species of which have the second abdominal ring constricted in the same manner, forming a second node behind the first. (b) A notch in the anterior margin of the wing of a dragon-fly where the marginal and costal veins meet and appear to be knotted together. 5. In bot., the definite part of a stem which normally bears a leaf, or a whorl of leaves, or in cryptogams, such as Equisetum and Chara, the points on the stem at which foliar organs of various kinds are borne. See cut in next column.-6. In astron., one of the points in which two great circles of the celestial sphere, such as the ecliptic and equator, or the orbit of a planet and the ecliptic, intersect each other; especially, one of the points at which a celestial orbit cuts the plane of the ecliptic. The node at which a heavenly body pa es or appears to pa to the north of the plane of the orbit or great circle with which its own orbit or apparent orbit is compared is called the ascending node; that where it descends to the south is called the descending node. (See dragon's head and tail, under dragon.) At the vernal equinox the sun is in its ascending node, at the autumnal equinox in its descending noduled to a revolution from a node to the same node again: as, the nodical revolutions of the moon. nodicorn (nod'i-kôrn), a. [L. nodus, knot, + cornu = È. horn.] Having nodose antennæ, as certain hemipterous insects.