from the GNU version of the Collaborative International Dictionary of English
- n.pl. A provisional group in which are placed a number of low microscopic organisms of doubtful nature. Some are probably plants, others animals.
from The Century Dictionary and Cyclopedia
- One of the kingdoms of animated nature, which Haeckel proposed (1868) to include the Protozoa and the Protophyta, or the lowest animals and plants as collectively distinguished from other organisms.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae
Sorry, no etymologies found.