Be sure to ask your doctor how often you should have a Pap smear. Pap smear frequency varies from woman to woman, based on age, health, and previous Pap smear findings. Pap Test: What is a Pap Test. 02 Feb 2003. American Cancer Society.
The noun SEMEN has 1 sense: 1. the thick white fluid containing spermatozoa that is ejaculated by the male genital tract. Familiarity information: SEMEN used as a noun is very rare.
Lumen: A luminous term referring to the channel within a tube such as a blood vessel or to the cavity within a hollow organ such as the intestine. Lumen is a luminous term because it is Latin for light, including the light that comes through a window. When a hollow organ is cut across, you can see light through the space that has been opened. So the word lumen came to mean this space.