isomerous

[ ahy-som-er-uhs ]

adjective

1. having an equal number of parts, markings, etc.
2. Botany. (of a flower) having the same number of members in each whorl.

isomerous

/ aɪˈsɒmərəs /

adjective

1. having an equal number of parts or markings
2. (of flowers) having floral whorls with the same number of parts Compare anisomerous

Word History and Origins

Origin of isomerous¹

First recorded in 1855–60; iso- + -mere + -ous

Example Sentences

Thus the formula S5P5St5C5 means that the flower is perfect, and has pentamerous symmetry, the whorls being isomerous.

From Project Gutenberg

Isomerous, the same number in the successive circles or sets.

From Project Gutenberg

Meiophylly of the gynœcium.—Numerical inequality in the case of the pistil, as compared with the other whorls of the flower, is of such common occurrence, under ordinary circumstances, that in some text-books it is looked on as the normal condition, and a flower which is isomerous in the outer whorls is by some writers not considered numerically irregular if the number of the carpels does not coincide with that of the other organs.

From Project Gutenberg

Isomerous: with equal number of tarsal joints on all feet := homoeomerous.

From Project Gutenberg

Homoeomerous: all feet with an equal number of tarsal joints: = isomerous.

From Project Gutenberg