any of several rules designating allowed transitions between quantum states in terms of the quantum numbers associated with the states.
Basic Spelling Rules ExplainedYou can teach yourself to be a better speller. It is important to realize that learning to spell is a process that is never complete. Spelling is something that everyone has to pay attention to and keep working at it. BASIC SPELLING RULES Short-Vowel Rule: When one-syllable words have a vowel in the middle, the vowel usually has a short sound. Examples: cat, dog, man, …
Netiquette: The Internet Rules You Should KnowRead more in this article about some frequently asked questions and fun facts related to our definitions.
- select committee,
- selective attention,
- selective inhibition,
- selective serotonin reuptake inhibitor,
- selective service
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019