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The orifice of the oviduct of an insect or other invertebrate.

To move one way and the other with quick turns; to shake to and fro; to move vibratingly; to cause to vibrate, as a part of the body; as, to wag the head. No discerner durst wag his tongue in censure. Shak. Every one that passeth thereby shall be astonished, and wag his head. Jer. xviii. 16.

To sing in a trilling, quavering, or vibratory manner; to modulate with turns or variations; to trill; as, certain birds are remarkable for warbling their songs.

A pore by which the water tubes of various invertebrates open externally.

ne of a system of tubular excretory organs having external openings, found in many invertebrates. They are believed to be analogous in function to the kidneys of vertebrates. See Illust. under Trematodea, and Sporocyst.

A vibration propagated from particle to particle through a body or elastic medium, as in the transmission of sound; an assemblage of vibrating molecules in all phases of a vibration, with no phase repeated; a wave of vibration; an undulation. See Undulation.

A weaver; originally, a female weaver. [Obs.] Brathwait.

Flexible rods the period of vibration of which in two planes at right angles are in some exact ratio to one another. When one end of such a rod is fixed, the free end describes in vibrating the corresponding Lissajous figure. So called because devised by Sir Charles Wheatstone.

rd only by one near at hand; to utter words without sonant breath; to talk without that vibration in the larynx which gives sonorous, or vocal, sound. See Whisper, n.

. (b) The old squaw. -- Winter egg (Zoöl.), an egg produced in the autumn by many invertebrates, and destined to survive the winter. Such eggs usually differ from the summer eggs in having a thicker shell, and often in being enveloped in a protective case. They sometimes develop in a manner different from that of the…

In bowed instruments, a harshness due to defective vibration in certain notes of the scale.

An instrument to determine the vibrative properties of different kinds of wood. Knight.

organ which secretes the yolk of the eggs in many turbellarians, and in some other invertebrates. See Illust. of Hermaphrodite in Appendix. -- Yolk sack (Anat.), the umbilical vesicle. See under Unbilical.

en granulelike bodies found in the interior of certain stentors, hydras, and other invertebrates.

Any one of numerous species of invertebrate animals which more or less resemble plants in appearance, or mode of growth, as the corals, gorgonians, sea anemones, hydroids, bryozoans, sponges, etc., especially any of those that form compound colonies having a branched or treelike form, as many corals and hydroids.…

A spore provided with one or more slender cilia, by the vibration of which it swims in the water. Zoöspores are produced by many green, and by some olive-brown, algæ. In certain species they are divided into the larger macrozoöspores and the smaller microzoöspores. Called also sporozoid, and swarmspore.…

f the malar, or jugal, with the zygomatic process of the temporal bone. In the lower vertebrates other bones may help to form it, and there may be two arches on each side of the skull, as in some reptiles. -- Zygomatic process, a process of the temporal or squamosal bone helping to form the zygomatic arch.…