sporangium

NOUN /spə'rændʒiəm/
10 LETTERS · 4 SYLLABLES · STARTS WITH S

sporangium is a valid 10-letter word worth 15 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1P3O1R1A1N1G2I1U1M3
1 + 3 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 3 =15 PTS
DOUBLE WORD → 30TRIPLE WORD → 45
MEANING

What does sporangium mean?