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stance, C6H5.C6H5, obtained by leading benzene through a heated iron tube. It consists of two benzene or phenyl radicals united.

A coalition or union of two vowel sounds pronounced in one syllable; as, ou in out, oi in noise; -- called a proper diphthong.

Having the tail fin divided into two equal parts by the notochord, or end of the vertebral column; protocercal. See Protocercal.

Having two modes of embryonic development.

Having two leaves, as a calyx, etc.

Having two successive sets of teeth (deciduous and permanent), one succeeding the other; as, a diphyodont mammal; diphyodont dentition; -- opposed to monophyodont. -- n.

Of or pertaining to two planes.

An instrument for determining the time of apparent noon. It consists of two mirrors and a plane glass disposed in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's center is…

Pertaining to the sending of two messages in the same direction at the same time. Diplex and contraplex are the two varieties of duplex.

Characterizing the ovum when it has two primary germinal layers.

Partaking of the nature of two bodies; producing two substances. Wright.

An order of myriapods having two pairs of legs on each segment; the Chilognatha.

A group of spiders having only two lunglike organs. [Written also Dipneumones.]

Two metrical feet taken together, or included in one measure. Hadley. Trochaic, iambic, and anapestic verses . . . are measured by dipodies. W. W. Goodwin.

Having two poles, as a magnetic bar.

One of the hexane paraffins, found in petroleum, consisting of two propyl radicals. See Hexane.

marsupial from Australia, about as large as the hippopotamus; -- so named because of its two large front teeth. See Illustration in Appendix.

An extensive order of insects having only two functional wings and two balancers, as the house fly, mosquito, etc. They have a suctorial proboscis, often including two pairs of sharp organs (mandibles and maxillæ) with which they pierce the skin of animals. They undergo a complete metamorphosis, their larvæ (called mag…

Having two wings only; belonging to the order Diptera.

es, some species of which produce a fragrant resin, other species wood oil. The fruit has two long wings.