SINCE 1828
Haeckelian
adjective
Haeck·e·li·an
| \ (ˈ)he¦kēlēən\
Definition of Haeckelian
(Entry 1 of 2)
: relating to Haeckel or his theories — compare recapitulation theory
Haeckelian
noun
\ "\
plural -s
Definition of Haeckelian (Entry 2 of 2)
: a believer in Haeckel's theories
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