any specific behavior | plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe |
the trait of being active; moving or acting rapidly and energetically | a covered cistern; waste water and sewage flow into it |
an organic process that takes place in the body | a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof |
a process existing in or produced by nature (rather than by the intent of human beings) | (technology) a process that acts to absorb or remove energy or a substance from a system |
the state of being active | |
(chemistry) the capacity of a substance to take part in a chemical reaction | |