Germ
/dʒˈɜrm/
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Definition
(noun) The small mass of cells from which a new organism develops; a seed, bud, spore, or zygote.
Sentence Examples
Ambition is the germ from which all growth of nobleness proceeds.
Antibodies work by attaching themselves to an invading germ.
CEFR Practice Quiz
Even a single ____ can cause a serious infection if it enters a person's body through an open wound.