te·tram·er·ous (tě-trămər-əs)
adj.
► Having or consisting of four similar parts.
► Botany. Having flower parts, such as sepals, petals, and stamens, in sets of four, as in the evening primrose.

[TahlilGaran] American Dictionary ▲

tetramerous
te·tramer·ism n.

[TahlilGaran] American Dictionary ▲