Are you a native English speaker? How do you pronounce this word?
The branch of medicine concerned with the effects of space flight on human beings.
Tutoring comment not yet available...
LearnThatWord and the Open Dictionary of English are programs by LearnThat Foundation, a 501(c)3 nonprofit.
Questions? Feedback? We want to hear from you!
or click here for instant support.
Copyright © 2005 and after - LearnThat Foundation. Patents pending.