Rosid

Part of speech: noun

Definitions

1. Referring to a large clade of flowering plants characterized by having petals and typically producing seeds enclosed within a fruit; pertaining to a group within angiosperms distinguished by molecular and morphological traits; describing plants classified under a specific major lineage of dicotyledons
2. Denoting plants classified within a major subdivision of flowering plants noted for particular floral structures and genetic markers; identifying a significant group of seed plants with petals and enclosed seeds; relating to a botanical category encompassing many common broad-leaved plants
3. Characterizing a botanical group comprising numerous species of flowering plants that share evolutionary ancestry and common reproductive features; defining a taxonomic clade within angiosperms marked by shared traits; pertaining to plants that produce flowers with specific petal arrangements and fruit-enclosed seeds

Etymology: "Rosid" names a large group of flowering plants, and its name is built from the genus "Rosa," the roses. The "-id" ending is the standard suffix used in biology to form family-level or higher group names, so "rosid" means, in effect, a member of the rose group, or a plant related to roses. Its meaning is therefore tied to a single genus that gave its name to a much wider clade. The pattern follows the way botanists name plant groups after a representative genus. Just as the "-aceae" ending marks a family, "-id" marks a clade in the rose-based naming scheme, and the word extends the rose's name to everything that shares a common ancestry with it. The result is a term that is far broader than roses themselves, covering apples, beans, oaks and many other familiar plants.

Synonyms: rosid clade, rosid group, flowering plant, angiosperm, dicot