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In a manner not to be felt or perceived; imperceptibly; gradually. The hills rise insensibly. Addison.

Not sensitive; wanting sensation, or wanting acute sensibility. Tillotson. Ruskin.

Not sensuous; not pertaining to, affecting, or addressing, the senses. That intermediate door Betwixt the different planes of sensuous form And form insensuous. Mrs. Browning.

Not sentient; not having perception, or the power of perception. The . . . attributes of an insentient, inert substance. Reid. But there can be nothing like to this sensation in the rose, because it is insentient. Sir W. Hamilton.

The state or quality of being intense; intensity; as, the intenseness of heat or cold; the intenseness of study or thought.

Within the mesentery; as, the intermesenteric, or aortic, plexus.

Not capable of being represented or portrayed.

Having equal entropy. Isentropic lines, lines which pass through points having equal entropy.

The doctrine of Jansen regarding free will and divine grace.

A follower of Cornelius Jansen, a Roman Catholic bishop of Ypres, in Flanders, in the 17th century, who taught certain doctrines denying free will and the possibility of resisting divine grace.

An oil used for illuminating purposes, formerly obtained from the distillation of mineral wax, bituminous shale, etc., and hence called also coal oil. It is now produced in immense quantities, chiefly by the distillation and purification of petroleum. It consists chiefly of several hydrocarbons of the methane series.…

less; to reduce; to make smaller, or fewer; to diminish; to lower; to degrade; as, to lessen a kingdom, or a population; to lessen speed, rank, fortune. Charity . . . shall lessen his punishment. Calamy. St. Paul chose to magnify his office when ill men conspired to lessen it. Atterbury.

One who, or that which, lessens. His wife . . . is the lessener of his pain, and the augmenter of his pleasure. J. Rogers (1839).

A general name for all those placental mammals that have a brain with few or no cerebral convolutions, as Rodentia, Insectivora, etc.

from tightness, tension, firmness, or fixedness; to make less dense or compact; as, to loosen a string, or a knot; to loosen a rock in the earth. After a year's rooting, then shaking doth the tree good by loosening of the earth. Bacon.

One who, or that which, loosens.

The state, condition, or quality, of being loose; as, the looseness of a cord; looseness of style; looseness of morals or of principles.

a fair pair of gallows, there to end their lives with shame, as a number of such other losengers had done. Holinshed.

Flattery; deceit; trickery. [Obs.] Chaucer.

Of or pertaining to the mesencephalon or midbrain.