1. Watery. Aqueous and phlegmatic.
2. Abounding in phlegm; as, phlegmatic humors; a phlegmatic constitution.
3. Generating or causing phlegm. Cold and phlegmatic habitations.
4. Not easily excited to action or passion; cold; dull; sluggish; heavy; as, a phlegmatic person.
(Science: physiology) Phlegmatic temperament, lymphatic temperament. See Lymphatic.
Origin: L. Phlegmaticus, Gr., cf. F. Phlegmatique.