tet·ra·ploid 
(tĕtrə-ploid′)
(tĕtrə-ploid′)adj.
Having four times the haploid number of chromosomes in the cell nucleus: a tetraploid species.
n.
A tetraploid individual.
tet′ra·ploidy n.
- blood grouping
- bloodguilt
- blood heat
- bloodhound
- bloodily
- bloodiness
- blood knot
- bloodless
- bloodlessly
- bloodlessness
- bloodletter
- bloodletting
- bloodline
- blood meal
- bloodmobile
- blood money
- blood orange
- blood plasma
- blood platelet
- blood poisoning
- blood pressure
- blood pudding
- blood red
- blood-red
- blood relation