Water tube: alternatives and connections

A process by which reaction occurs in the presence of certain agents which were formerly believed to exert an influence by mere contac…

Small, generally microscopic, vibrating appendages lining certain organs, as the air passages of the higher animals, and in the lower…

A function involving the coefficients and the variables of a quantic, and such that when the quantic is lineally transformed the same…

A derived function; a function obtained from a given function by a certain algebraic process.

The tribe of aquatic Amphibia which includes Amphiuma, Menopoma, etc. They have permanent gill openings, but no external gills; -- cal…

The gradual formation or production of organs or parts by a process of evolution or development, as when the seed develops the root an…

Having the organs of one side, or half, different in function from the corresponding organs on the other side; as, dimidiate hermaphro…

That which is egested or thrown off from the body by the various excretory channels; excrements; -- opposed to ingesta.

A group of wormlike invertebrates having, along the sides of the body, branchial openings for the branchial sacs, which are formed by…

An oblong vermiform mass on the dorsal side of the testicle, composed of numerous convolutions of the excretory duct of that organ.

The hardened parts of the external integument of an animal, including hair, feathers, nails, horns, scales, etc.,as well as the armor…

A simple visual organ found in many invertebrates, consisting of pigment cells covering a sensory nerve termination.

That which is believed on any subject, whether in science, politics, or religion; especially (Theol.), a system of religious belief of…

That part of a plant destined to produce seed, and hence including one or both of the sexual organs; an organ or combination of the or…

The appropriate action of any special organ or part of an animal or vegetable organism; as, the function of the heart or the limbs; th…

either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine; "u…

A sac containing small, calcareous concretions (otoliths). They are found in many Medusae, and other invertebrates, and are supposed t…

The nostrils or nasal openings, -- the anterior nares being the external or proper nostrils, and the posterior nares, the openings of…