̷ ̷ˈ ̷ ̷thēəm noun
( plural hypan·thia -ēə)
Etymology: New Latin, from hypo- + anth- + -ium
: an enlargement of the usually cup-shaped receptacle bearing on its rim the stamens, petals, and sepals of a flower and often enlarging and surrounding the fruits (as in the rose hip) — called also calyx tube