See Also: placid(dictionary)
placid(medicine)
placid(dictionary)
Lake Placid(encyclopedia)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)
medicine(1)(dictionary)
medicine man(encyclopedia)
medicine(encyclopedia)

middle mediastinum (medicine) and placid (iou)


middle mediastinum (medicine)


middle mediastinum


The central portion of the inferior mediastinum which contains the pericardium and its contents and the phrenic nerves and accompanying vessels.

Synonym: mediastinum medium.


placid (iou)



placid adjective. E17.
[French placide or Latin placidus pleasing, favourable, gentle, from placere please: see -ID1.]
Mild, calm, peaceful; unruffled, tranquil, serene; (of a person) not easily disturbed or aroused.
P. S. Buck Except for the slight..wind.., the waters lay placid and unmoved. J. Mark Disturbed by Cleaver's placid acceptance of the fact that his Home was disintegrating over his head. D. Cecil Over-excitedthis was an ominous symptom in a woman who was ordinarily placid.
pla'cidity noun the quality of being placid, calmness, tranquillity, peacefulness E17.
placidly adverb E17.
placidness noun E18.