All 3 Uses

comprehend
in
The Miracle Worker
(Auto-generated)

HELEN'S fingers have fluttered to her MOTHER'S lips, vainly trying to comprehend their movements.†
p. 10.8

comprehend = understand -- especially to understand it completely
HELEN waits, uncomprehending.†
p. 95.3

uncomprehending = not understanding

standard prefix: The prefix "un-" in uncomprehending means not and reverses the meaning of comprehending. This is the same pattern you see in words like unhappy, unknown, and unlucky.
KATE comprehends it, their first act of verbal communication, and she can hardly utter the word aloud, in wonder, gratitude, and deprivation; it is a moment in which she simultaneously finds and loses a child.†
p. 111.4 *

comprehends = understands something

Definitions:

(1) (comprehend)
to understand something -- especially to understand it completely
(2) (meaning too rare to warrant focus)
Much more rarely (and more frequently in the past), comprehend can mean to include as part of something broader. That was the first sense of the word listed in Webster's Dictionary of 1828 with this sample sentence: "The empire of Great Britain comprehends England, Scotland and Ireland, with their dependencies."