similar

adjective

Having a resemblance in appearance or nature; alike though not identical.

adjective

Having corresponding angles equal and corresponding line segments proportional. Used of geometric figures.

In the theory of aggregates, similarly arranged; coupled by a one-one relation.

Having characteristics in common; like in form, appearance, size, qualities, relations, etc.; having a more or less marked resemblance to each other or one another; in some respects identical; bearing a resemblance, as to something implied or specified: as, the general features of the two landscapes are similar; the plans are similar.

Homogeneous; of like structure or character throughout.

In geometry, of the same shape: said of two figures which have all their corresponding angles equal, whence it will follow, for ordinary Euclidean space, that all their corresponding lengths will be proportional, that their corresponding areas will be in the duplicate ratio of their lengths, and that their corresponding volumes will be in the triplicate ratio of their lengths.

In biology, alike in some respects; identical to some extent.

In music, in the same direction: said of the rising and falling of two voice-parts.

noun

That which is similar; that which resembles something else in form, appearance, quality, etc.; in the plural, things resembling one another.

noun

The homeopathic principle of administering drugs. See similia.