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The second element in each half of a hemal arch, corresponding to the sternal part of a rib. Owen. -- Hem`a*po*phys"i*al, a.

Having seven units of attractive force or affinity; -- said of heptad elements or radicals.

Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; -- opposed to homologous; as, heterologous organs. Heterologous stimulus. (Physiol.) See under Stimulus. -- Heterologous tumor (Med.), a tumor differing in structure from the normal tissues of the bo…

e of structure; lack of analogy between parts, owing to their being composed of different elements, or of like elements in different proportions; variation in structure from the normal form; -- opposed to homology.

An abnormal formation foreign to the economy, and composed of elements different from those are found in it in its normal condition. Dunglison.

A rare element said to be contained in gadolinite. -- Hol"mic, a.

The state or quality of being homogeneous in elements or first principles; likeness or identity of parts.

aracterized by, sameness of parts; receiving or advocating the doctrine of homogeneity of elements or first principles.

Of the same kind of nature; consisting of similar parts, or of elements of the like nature; -- opposed to heterogeneous; as, homogeneous particles, elements, or principles; homogeneous bodies.

raffin series. In an extended sense, the term is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said to be in homology with each other. Cf. Heterology. General homology (Biol.), the higher relation which a series of parts, or a single part, bears to the fundam…

A compound of the binary type, in which hydrogen is united with some other element.

erived from, hydrogen and iodine; -- said of an acid produced by the combination of these elements. Hydriodic acid (Chem.), a pungent, colorless gas, HI, usually prepared as a solution in water. It is strong reducing agent. Called also hydrogen iodine.

A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those o…

A chemical process involving the addition of the elements of water.

mination. The hydroxides are regarded as compounds of hydroxyl, united usually with basic element or radical; as, calcium hydroxide ethyl hydroxide.

Marriage; union as if by marriage. Hymen of element and race. Emerson.

A process, or other element, of a vertebra developed from the ventral side of the centrum, as hæmal spines, and chevron bones. -- Hy`pa*po*phys"i*al, a.

An increase in, or excessive growth of, the normal elements of any part.

A prefix denoting that the element to the name of which it is prefixed enters with a low valence, or in a low state of oxidization, usually the lowest, into the compounds indicated; as, hyposulphurous acid.

Pertaining to one or more small elements in the hyoidean arch of fishes, between the caratohyal and urohyal. -- n.