ectotherm
Concise Oxford English Dictionary © 2008 Oxford University Press:
ectotherm /ˈɛktəʊθəːm/
▶noun Zoology an animal that is dependent on external sources of body heat.
– derivatives
ectothermic adjective,
ectothermy noun.
ectothermic adjective,
ectothermy noun.
'ectotherm' also found in these Oxford entries:

