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evelop differential characteristics in; to specialize; to desynonymize. The word then was differentiated into the two forms then and than. Earle. Two or more of the forms assumed by the same original word become differentiated in signification. Dr. Murray.

Not differentiated; specifically (Biol.), homogenous, or nearly so; -- said especially of young or embryonic tissues which have not yet undergone differentiation (see Differentiation, 3), that is, which show no visible separation into their different structural parts.

The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See Illust. under Invagination.

næ or layers; one of the methods by which the various blastodermic layers of the ovum are differentiated.

An undifferentiated aggregate of cells or plastids.

One who, or that which, differentiates.

Having the teeth differentiated into incisors, canines, and molars, as in man; -- opposed to homodont.

from the same embryonic systems into which the secondary unit (gastrula or plant enbryo) differentiates.

are strong on both sides. Bacon. Indifferent tissue (Anat.), the primitive, embryonic, undifferentiated tissue, before conversion into connective, muscular, nervous, or other definite tissue.

An expression which, being differentiated, will produce a given differential. See differential Differential, and Integration. Cf. Fluent. Elliptic integral, one of an important class of integrals, occurring in the higher mathematics; -- so called because one of the integrals expresses the length of an arc of an ellipse…

One of the methods by which the various germinal layers of the ovum are differentiated.

asitic or saprophytic fungi, the algal or algalike fungi. The plant body ranges from an undifferentiated mass of protoplasm to a well-developed and much- branched mycelium. Reproduction is mainly sexual, by the formation of conidia or sporangia; but the group shows every form of transition from this method through simp…

The young tissue of a fibrovascular bundle before its component cells have begun to be differentiated. Sachs.

hypothetical homogeneous cosmic material of the original universe, supposed to have been differentiated into what are recognized as distinct chemical elements.

, the generation which bears asexual spores; -- opposed to gametophyte. It is not clearly differentiated in the life cycle of the lower plants. -- Spo`ro*phyt"ic (#), a.

s a thallus, which may be filamentous or may consist of plates of cells; it is commonly undifferentiated into stem, leaves, and roots, and shows no distinct tissue systems; the fronds of many algæ, however, are modified to serve many of the functions of the above-named organs. Both asexual and sexual reproduction, ofte…

ly, both letters being then used both as vowels and consonants. U and V are now, however, differentiated, U being used only as a vowel or semivowel, and V only as a consonant. The true primary vowel sound of U, in Anglo-Saxon, was the sound which it still retains in most of the languages of Europe, that of long oo, as…