As mouth cancer can strike in a number of places, including the lips, tongue, gums and cheek, and given that early detection is so crucial for survival, itâs extremely important that we all know what to look out for. 1  Ulcers which do not heal in three weeks.  Red and white patches in the mouth.
pluÂ·ripÂ·oÂ·tent. adj. Relating to or being a cell that is capable of differentiating into cells of any type of tissue except placental tissue.
2. Botany The part within the ovary of a flowering plant to which the ovules are attached. [New Latin, from Latin, flat cake, alteration of Greek plakoenta, from accusative of plakoeis, flat, from plax, plak-, flat land, surface; see plÄk-1 in the Appendix of Indo-European roots.] plaÂ·cenâ²tal adj.