granum

English

Etymology 1

From the late 19th c., from Latin grānum (“grain, seed or small kernel”). Doublet of corn, grain, gram, and grao.

Noun

granum (plural grana)

1. (biology) A stack-like structure in plant chloroplasts that contain chlorophyll; the site of photosynthesis.

Etymology 2

Noun

granum (plural granums)

1. (obsolete, regional) One's grandmother.
   • 1663 (indicated as 1664), [Samuel Butler], “Canto III”, in Hudibras. The Second Part. […], London: […] T[homas] R[oycroft] for John Martyn, and James Allestry […], →OCLC, page 175:

     Each of 'em has a ſev'ral Gin, / To catch Intelligences in. / Some by the Noſe vvith fumes trapan 'em, / As Dunſtan did the Devil's Grannum.

Alternative forms

• grannum