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nitis) of the Atlantic coast of the United States. When adult it is nearly black, more or less irregularly barred, with greenish gray. Called also blackfish, oyster fish, salt-water chub, and moll. [Written also tautaug.]

, or relation of metameric substances, or their respective derivatives, which are more or less interchangeable, according as one form or the other is the more stable. It is a special case of metamerism; thus, the lactam and the lactim compounds exhibit tautomerism.

A lesson to be learned; a task. [Obs.] Johnson. Tax cart, a spring cart subject to a low tax. [Eng.]

Shedding no tears; free from tears; unfeeling. -- Tear"less*ly, adv. -- Tear"less*ness, n.

Less properly, phototelegraphy.

etween either tropic and the corresponding polar circle; -- so called because the heat is less than in the torrid zone, and the cold less than in the frigid zones.

longing to Ericulus, Echinope, and related genera, native of Madagascar. They are more or less spinose and resemble the hedgehog in habits. The rice tendrac (Oryzorictes hora) is very injurious to rice crops. Some of the species are called also tenrec.

discharge itself, as into the air by a spark, or to pass from a body of greater to one of less electrical potential. It varies as the quantity of electricity upon a given area. Tension brace, or Tension member (Engin.), a brace or member designed to resist tension, or subjected to tension, in a structure. -- Tension r…

A more or less elongated process or organ, simple or branched, proceeding from the head or cephalic region of invertebrate animals, being either an organ of sense, prehension, or motion. Tentacle sheath (Zoöl.), a sheathlike structure around the base of the tentacles of many mollusks.

. [Obs.] Chaucer. "And oftentimes by Termagant and Mahound [Mahomet] swore." Spenser. The lesser part on Christ believed well, On Termagant the more, and on Mahound. Fairfax.

rocks having a common age or origin; -- nearly equivalent to formation, but used somewhat less comprehensively.

A morbid condition resembling tetanus, but distinguished from it by being less severe and having intermittent spasms.

, especially in matter of sin Milton. Thanks, thanks to thee, most worthy friend, For the lesson thou hast taught. Longfellow. His thanks, Her thanks, etc., of his or her own accord; with his or her good will; voluntary. [Obs.] Full sooth is said that love ne lordship, Will not, his thanks, have no fellowship. Chaucer.…

ul; ungrateful. That she may feel How sharper than a serpent's tooth it is To have a thankless child! Shak.

The more or less cuplike calicle of a coral.

in opening or closing the damper of a stove, or the like, as the heat becomes greater or less than is desired.

An order of carnivorous dinosaurs in which the feet are less birdlike, and hence more like those of an ordinary quadruped, than in the Ornithopoda. It includes the repacious genera Megalosaurus, Creosaurus, and their allies.

Going all lengths; extreme; thoroughplaced; -- less common in this sense.

Lacking thought; careless; inconsiderate; rash; as, a thoughtless person, or act.

Having no thralls.