adj. having more than the usual number of complete sets of chromosomes in a single cell
n. a cell or organism that has more than the usual number of complete sets of chromosomes
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. (genetics) an organism or cell having more than twice the haploid number of chromosomes
adj. of a cell or organism having more than twice the haploid number of chromosomes
Word Usage
"If the diet was stored initially for 6 weeks following irradiation before being fed to the animals no increase in the number of polyploid cells was noted."