py·ro·la·ce·ae \ˌpīrəˈlāsēˌē\noun plural Usage: capitalized Etymology: New Latin, from Pyrola, type genus + -aceae : a family that comprises mostly evergreen herbs (order Ericales) of temperate regions with pentamerous regular flowers succeeded by loculicidal capsules and that is sometimes included in Ericaceae • py·ro·la·ceous\| ̷ ̷ ̷ ̷|lāshəs\adjective