English Dictionary

os

/ɒs/

noun

(anatomy) An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina).

The doctor examined the patient's os to check for any abnormalities.

意味（1）

(anatomy) An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina).

The instrument closed, as seen in Fig. 1, is then passed along the finger to the os, in and through the cervix up to the fundus of the uterus, which may be determined both by the distance and the resistance to the broad rounded head of the Capiat.