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d 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 fundamental or general type on which the group is constituted…

Pertaining to, or derived 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.

ompound of hydriodic acid with a base; -- distinguished from an iodide, in which only the iodine combines with the base.

One of a series of compounds containing iodine, and analogous to the chlorhydrins.

to, or containing, iodine; specif., denoting those compounds in which it has a relatively high valence; as, iodic acid. Iodic acid, a monobasic acid, consisting of iodine with three parts of oxygen and one of hydrogen.

A binary compound of iodine, or one which may be regarded as binary; as, potassium iodide.

A morbid state produced by the use of iodine and its compounds, and characterized by palpitation, depression, and general emaciation, with a pustular eruption upon the skin.

To treat or impregnate with iodine or its compounds; as, to iodize a plate for photography. R. Hunt.

A prefix, or combining from, indicating iodine as an ingredient; as, iodoform.

Any of several isomeric iodine derivatives of the cresols, C6H3I(CH3)OH, esp. one, an odorless amorphous powder, used in medicine as a substitute for iodoform.

culiar substance obtained from the thyroid gland, containing from nine to ten per cent of iodine.

Pertaining to, or containing, iodine. See -ous (chemical suffix). Iodous acid, a hypothetical acid, analogous to chlorous acid.

eaweed, -- formerly much used in the manufacture of glass, now used in the manufacture of iodine.

A peculiar amyloid substance, colored blue by iodine and sulphuric acid, occurring mainly as an abnormal infiltration into the spleen, liver, etc.

An agent, as mercury, iodine, etc., which promotes the liquefying processes of the system, and increases the secretions.

An iodine compound obtained as a yellowish gray, odorless, tasteless powder by the action of iodine on phenolphthalein.

Pertaining to, or designating, certain compounds of iodine and oxygen.

-- also called starch-iodide paper -->

An iodide containing a higher proportion of iodine than any other iodide of the same substance or series.

A iodide having more than one atom of iodine in the molecule.