antrum

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an·trum

 (ăn′trəm)
n. pl. an·tra (-trə)
1. A cavity or chamber, especially one in a bone.
2. Either of the sinuses in the bones of the upper jaw, opening into the nasal cavity.

[Late Latin, cavity in the body, from Latin, cave, from Greek antron.]

an′tral adj.

antrum

(ˈæntrəm)
n, pl -tra (-trə)
(Anatomy) anatomy a natural cavity, hollow, or sinus, esp in a bone
[C14: from Latin: cave, from Greek antron]
ˈantral adj

an•trum

(ˈæn trəm)

n., pl. -tra (-trə).
a cavity in a body organ, esp. a bony sinus.
[1720–30; < New Latin; Latin: cave < Greek ántron]
an′tral, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antrum - a natural cavity or hollow in a boneantrum - a natural cavity or hollow in a bone
bodily cavity, cavum, cavity - (anatomy) a natural hollow or sinus within the body
Translations

an·trum

n. antro, cavidad o cámara casi cerrada;
auris ___cavidad del oído;
cardiaum ______ cardial;
follicular ______ folicular;
mastoid ______ mastoideo;
maxillary ______ maxilar o seno maxilar;
pyloricum ______ pilórico;
tympanic ______ timpánico.