|1.||biology serotinal, Also: serotinous produced, flowering, or developing late in the season|
|2.||either of two insectivorous bats, Eptesicus serotinus or Vespertilio serotinus: family Vespertilionidae|
|[C16: from Latin sērōtinus late, from sērus late; applied to the bats because they fly late in the evening]|
|serotinous (sĭ-rŏt'n-əs, sěr'ə-tī'nəs) Pronunciation Key
Late in developing, opening, or blooming. For example, serotinous pine cones may persist unopened on the tree for years and only burst open during a forest fire. Serotinous flowers on trees develop only after the tree has produced leaves.