Bi-lateral symmetry
a basic body plan in which the left and right sides of the organism can be divided into approximate mirror images of each other along the midline.
noun
the property of an organism or part of an organism such that, if cut in only one plane, the two cut halves are mirror images of each other see also radial symmetry
bilateral symmetry
(bī-lāt’ər-əl)
symmetrical arrangement of an organism or part of an organism along a central axis, so that the organism or part can be divided into two equal halves. bilateral symmetry is a characteristic of animals that are capable of moving freely through their environments. compare radial symmetry.
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- Bi-lingual
able to speak two languages with the facility of a native speaker. spoken, written, or containing similar information in two different languages: a bilingual dictionary; public notices at the emb-ssy are bilingual. of, involving, or using two languages: a bilingual community; bilingual schools. a bilingual person. historical examples little man’s family j. b. enochs the […]
- Bi-media
adjective examples
- Bi-monthly
occurring every two months. occurring twice a month; semimonthly. a bimonthly publication. every two months: next year we plan six field trips to take place bimonthly. twice a month; semimonthly. historical examples on the trail of the immigrant edward a. steiner the life of sir rowland hill, vol. ii (of 2) rowland hill the deaf […]
- Bi-partisan
representing, characterized by, or including members from two parties or factions: government leaders hope to achieve a bipartisan foreign policy. historical examples the art of public speaking dale carnagey (aka dale carnegie) and j. berg esenwein the art of public speaking dale carnagey (aka dale carnegie) and j. berg esenwein a hoosier chronicle meredith nicholson […]
- Bi-quarterly
occurring twice in each quarter of a year. adjective occurring twice every three months