Submitted by admin on Mon, 09/28/2015 - 12:01
definition:
unplanned; uncontrolled
sentence:
Because of spontaneous mutations in germ cells — sperm and eggs — each generation of our species is subtly different.
The spontaneous combustion inside the cylinder creates the power of the motor.
difficulty:
medium
toefl frequency:
2
toefl classification:
adverb:
spontaneously
adjective:
spontaneous
adverb sentence:
adjective sentence:
verb:
verb sentence:
noun:
spontaneity
noun sentence: