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A stage in the development of certain insects, such as the May flies, intermediate between the pupa and imago. In this stage, the insect is able to fly, but subsequently sheds a skin before becoming mature. Called also pseudimago.

Any large tumor developed in the abdomen, and neither fluctuating nor sonorous. Dunglison.

The practice of using symbols, or the system of notation developed thereby.

axis or stem produced by dichotomous branching in which one of the branches is regularly developed at the expense of the other, as in the grapevine.

f the Tagalogs. It belongs to the Malay family of languages and is one of the most highly developed members of the family.

of the body being much larger and longer than the anterior ones, and containing the fully developed sexual organs. The head is small, destitute of a mouth, but furnished with two or more suckers (which vary greatly in shape in different genera), and sometimes, also, with hooks for adhesion to the walls of the intestine…

A current, as of electricity, developed, or set in motion, by the action of heat.

Electricity developed in the action of heat. See the Note under Electricity.

trength of an electric current in the heat which it produces, or for determining the heat developed by such a current.

of the Greek qa`natos, death. Theta function (Math.), one of a group of functions used in developing the properties of elliptic functions.

A kind of magical science or art developed in Alexandria among the Neoplatonists, and supposed to enable man to influence the will of the gods by means of purification and other sacramental rites. Schaff-Herzog Encyc.

A process of electric welding in which heat is developed by a large current passing through the metal.

A developable surface. See under Developable.

A division of acalephs in which the development is direct from the eggs, without a hydroid stage. Some of the species are parasitic on other medusæ.

Any change in an organism which alters its general character and mode of life, as in the development of the germ into the embryo, the egg into the animal, the larva into the insect (metamorphosis), etc.; also, the change which the histological units of a tissue are prone to undergo. See Metamorphosis.…

The change of one species into another, which is assumed to take place in any development theory of life; transformism. Bacon. Transmutation of metals (Alchem.), the conversion of base metals into gold or silver, a process often attempted by the alchemists. See Alchemy, and Philosopher's stone, under Philosopher.…

A genus of fresh-water or river turtles which have the shell imperfectly developed and covered with a soft leathery skin. They are noted for their agility and rapacity. Called also soft tortoise, soft-shell tortoise, and mud turtle.

A theory of the development of mammalian molar teeth. The primitive stage is that of simple cones, as in reptiles. The simple cone then developed a smaller cone in front and another behind. Next, a cingulum was developed, and the three cones became arranged in a triangle, the two smaller cusps having moved to the outer…

oung larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end.

Characterized by the development of tubercles; as, tubercular diathesis.