abbr. 严重缺铁性贫血（severe iron deficiency anemia）

[ noun ]
large genus of tropical subshrubs or herbs some of which yield fibers of mucilaginous substances
<noun.plant>

Sida \Si"da\, n. [NL., fr. Gr. ??? a kind of plant.] (Bot.)
A genus of malvaceous plants common in the tropics. All the
species are mucilaginous, and some have tough ligneous fibers
which are used as a substitute for hemp and flax. --Balfour
(Cyc. of India).