A methyl group, bound to a quaternary ammonium ion or a tertiary sulfonium ion, that can take part in transmethylation reactions.
Active vs. Passive Voice: Hear and Be HeardFirst, a quick overview, in case all you need is a reminder: In active voice, the subject performs the action of the verb. In passive voice, the subject receives the action of the verb. If you feel like you need a little more than that, keep reading. Passive Voice The subject of a sentence is the person or thing that sentence is about. You can …
locavoreRead more in this article about some frequently asked questions and fun facts related to our definitions.
- artificial pacemaker,
- artificial person,
- artificial radioactivity,
- artificial reality,
- artificial respiration,
- artificial turf,
- artificial ventilation,
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.