from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Divided or dividing into two parts or classifications.
- adj. Characterized by dichotomy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Dividing or branching into two pieces.
from the GNU version of the Collaborative International Dictionary of English
- adj. Regularly dividing by pairs from bottom to top.
from The Century Dictionary and Cyclopedia
- Pertaining to or consisting of a pair or pairs; divided into two, or having a dual arrangement or order.
- Specifically— In botany, regularly dividing by pairs from below upward; two-forked: as, a dichotomous stem. A good example of a dichotomous stem is furnished by the mistletoe. See cut under dichotomy.
- In zoology:
- Branching by pairs; biramous; bifurcate; forked: as, the dichotomous division of a deer's antlers; the dichotomous foot of a crustacean.
- Distichous; bifarious; two-rowed or two-ranked; parted in the middle: as, the dichotomous hairs of a squirrel's tail.
- In classification, binary; dual; arranged in two ranks or series; opposed by pairs, as a set of characters, or a number of objects characterized by dichotomization. Also dichotomic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. divided or dividing into two sharply distinguished parts or classifications
From the Late Latin dichotomos, from Ancient Greek διχότομος (dikhotomos, "cut in half"), from δίχα (dikha, "apart") + τέμνω (temnō, "I cut"). (Wiktionary)