from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, involving, or constituting a cause: a causal relationship between scarcity of goods and higher prices.
- adj. Indicative of or expressing a cause.
- n. A word or grammatical element, such as since or because, expressing a cause or reason.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. of, relating to, or being a cause of something; causing
- n. a word (such as because) that expresses a reason or a cause
from the GNU version of the Collaborative International Dictionary of English
- adj. Relating to a cause or causes; inplying or containing a cause or causes; expressing a cause; causative.
- n. A causal word or form of speech.
from The Century Dictionary and Cyclopedia
- Constituting or being a cause; producing effects or results; causative; creative: as, causal energy.
- Relating to a cause or causes; implying or containing a cause or causes; expressing a cause.
- n. In grammar, a word that expresses a cause, or introduces a reason.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. involving or constituting a cause; causing
From Latin causalis, from causa ("cause"); see cause. (Wiktionary)