Vaccines and the immune system. When an individual is vaccinated against a disease or an infection, say Diphtheria, his or her immune system is prepared to fight the infection. Once vaccinated when the person is exposed to the bacterium that causes it the body gears up to fight off the infection.
LINK / CITE ADD TO WORD LIST. adjective. The definition of obstinate is extremely stubborn and determined to have your own way. An example of obstinate is a person who drives during a severe hurricane despite major warnings not to do so.comparative more obstinate, superlative most obstinate). 1  Stubbornly adhering to an opinion, purpose, or course, usually with implied unreasonableness; persistent. 2  Said of inanimate things not easily subdued or removed.
KJV Dictionary Definition: leaven. leaven. LEAVEN, n. lev'n. L. levo, Eng. to lift. 1. A mass of sour dough, which, mixed with a larger quantity of dough or paste, produces fermentation in it and renders it light. During the seven days of the passover, no leaven was permitted to be in the houses of the Jews. Ex. 12. 2. Any thing which makes a general change in the mass. It generally means something which corrupts or depraves that with which it is mixed. Beware of the leaven of the Pharisees and of the Sadducees. Matt. 16. LEAVEN, v.t. lev'n. 1. To excite fermentation in; to raise and make light, as dough or paste. A little leaven leaveneth the whole lump. 1Cor. 5. 2. to taint; to imbue. leavened. LEAVENED, pp. lev'ened. Taised and made light by fermentation. leavening. LEAVENING, ppr. lev'ening. Making light by fermentation. LEAVENING, n. lev'ening. that which leavens or makes light. leavenous. LEAVENOUS, a. lev'enous. containing leaven; tainted.