A catheter with two lumens, allowing injection and removal of fluid.two-way catheter
double rainbowRead more in this article about some frequently asked questions and fun facts related to our definitions.
Don’t Get Into Double Trouble With Double NegativesWhat’s a double negative? A double negative is when two negative words or constructions are used within a single clause. Sentences with double negatives are not grammatically correct . . . and they’re confusing. That’s because double negatives cancel each other out and make a positive. So, when you use a double negative it ends up being the exact opposite of what you mean. You’ll …
- double-crested cormorant,
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.