dimerous

[ dim-er-uhs ]

adjective

1. consisting of or divided into two parts.
2. Botany. (of flowers) having two members in each whorl.

dimerous

/ ˈdɪmərəs /

adjective

1. consisting of or divided into two segments, as the tarsi of some insects
2. (of flowers) having their floral parts arranged in whorls of two

dimerous

/ dĭm′ər-əs /

1. Consisting of two parts or segments, as the tarsus in certain insects.
2. Having flower parts, such as petals, sepals, and stamens, in sets of two.

Derived Forms

• ˈdimerism, noun

Other Words From

• dimer·ism noun
• un·dimer·ous adjective

Word History and Origins

Origin of dimerous¹

1820–30; < New Latin dimerus < Greek dimerḗs bipartite. See di- ¹, -merous

Word History and Origins

Origin of dimerous¹

C19: from New Latin dimerus, from Greek dimerēs, from di- ¹+ meros part

Example Sentences

Leaves oblong or oval with narrowed base; flowers mostly dimerous; seeds short-oblong, with 6 or 7 longitudinal lines and 10–12 crossbars.—Ill. and southwestward.

From Project Gutenberg

A flower in which the parts are arranged in twos is called dimerous; when the parts of the whorls are three, four or five, the flower is trimerous, tetramerous or pentamerous, respectively.

From Project Gutenberg

Dimerous and tetramerous symmetry occur also among dicotyledons.

From Project Gutenberg

The symmetry in the flower is evidently dimerous, and the abnormality in the androecium, where the four long stamens are opposite the posterior sepals, takes place by a splitting, at a very early stage of development, of a single outgrowth into two.

From Project Gutenberg

Dimerous, made up of two parts, or its organs in twos.

From Project Gutenberg