**plane of symmetry** — The median plane dividing a bilaterally symmetrical animal into two halves that are mirror images of each other … Dictionary of invertebrate zoology

**principal plane of symmetry** — a plane of symmetry in a crystal that includes two or more axes of symmetry … Useful english dictionary

**Symmetry** — For other uses, see Symmetry (disambiguation) … Wikipedia

**symmetry** — /sim i tree/, n., pl. symmetries. 1. the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts. 2. the proper or … Universalium

**Symmetry in biology** — For other uses, see Symmetry (disambiguation) and Bilateral (disambiguation). Bilateral symmetry redirects here. For bilateral symmetry in mathematics, see reflection symmetry. The elaborate patterns on the wings of butterflies are one example of … Wikipedia

**Symmetry (biology)** — Bilateral symmetry redirects here. For bilateral symmetry in mathematics, see reflection symmetry. Symmetry in biology is the balanced distribution of duplicate body parts or shapes. The body plans of most multicellular organisms exhibit some… … Wikipedia

**plane symmetry** — noun Etymology: plane (IV) : symmetry with respect to a plane … Useful english dictionary

**Plane symmetry** — means a symmetry of a pattern in the Euclidean plane; that is, a transformation of the plane that carries any directioned lines to lines and preserves many different distances. If one has a pattern in the plane, the set of plane symmetries that… … Wikipedia

**symmetry** — [sim′ə trē] n. pl. symmetries [< MFr or L: MFr symmetrie (now symétrie) < L symmetria < Gr < symmetros, measured together < syn , together + metron, a MEASURE] 1. similarity of form or arrangement on either side of a dividing line… … English World dictionary

**Symmetry** — Sym me*try, n. [L. symmetria, Gr. ?; sy n with, together + ? a measure: cf. F. sym[ e]trie. See {Syn }, and {Meter} rhythm.] 1. A due proportion of the several parts of a body to each other; adaptation of the form or dimensions of the several… … The Collaborative International Dictionary of English