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class of independent, isolated cells found in the mesoderm, while the germ layers are undergoing differentiation.

An insect which undergoes a metamorphosis.

The change of form which one animal species undergoes in a series of successively produced individuals, extending from the one developed from the ovum to the final perfected individual. Hence, metagenesis involves the production of sexual individuals by nonsexual means, either directly or through intervening sexless ge…

ining to, produced by, or exhibiting, certain changes which minerals or rocks may have undergone since their original deposition; -- especially applied to the recrystallization which sedimentary rocks have undergone through the influence of heat and pressure, after which they are called metamorphic rocks.…

a bud into a blossom. Especially, that form of sexual reproduction in which an embryo undergoes a series of marked changes of external form, as the chrysalis stage, pupa stage, etc., in insects. In these intermediate stages sexual reproduction is usually impossible, but they ultimately pass into final and sexually dev…

nits which were conceived of as endowed with the power to produce all the changes they undergo, and thus determine all physical and spiritual phenomena.

A heap of ore; a mass undergoing the process of amalgamation.

To affect with necrosis; to unergo necrosis. Quain.

ned wings. The mouth organs are adapted for chewing. They feed upon other insects, and undergo a complete metamorphosis. The ant-lion, hellgamite, and lacewing fly are examples. Formerly, the name was given to a much more extensive group, including the true Neuroptera and the Pseudoneuroptera.

The soft tissue, or substance, which, in developing bone, ultimately undergoes ossification.

ody by the earth's radius. -- Optical parallax, the apparent displacement in position undergone by an object when viewed by either eye singly. Brande & C. -- Parallax of the cross wires (of an optical instrument), their apparent displacement when the eye changes its position, caused by their not being exactly in the…

e state or condition to another; to change possession, condition, or circumstances; to undergo transition; as, the business has passed into other hands. Others, dissatisfied with what they have, . . . pass from just to unjust. Sir W. Temple.

Undergoing pains, trails, or the like, without murmuring or fretfulness; bearing up with equanimity against trouble; long- suffering.

One under church censure, but admitted to penance; one undergoing penance.

The protoplasmic matter which surrounds the entoblast, or cell nucleus, and undergoes segmentation. -- Per`i*blas"tic, a.

around the mouth. It is usually classed with the gephyreans. Its larva (Actinotrocha) undergoes a peculiar metamorphosis.

nother substance having the same atomic proportions, but a higher molecular weight; to undergo polymerization; thus, aldehyde polymerizes in forming paraldehyde.

Capacity of undergoing or suffering; fitness to be acted upon; susceptibility; -- called also passive power; as, great power of endurance. Power, then, is active and passive; faculty is active power or capacity; capacity is passive power. Sir W. Hamilton.

changes or conditions preceding fecundation, especially to the changes which the ovum undergoes before fecundation.

possessing, or characterized by, some quality or property in the first degree; having undergone the first stage of substitution or replacement. Primary alcohol (Organic Chem.), any alcohol which possess the group CH2.OH, and can be oxidized so as to form a corresponding aldehyde and acid having the same number of carb…