For a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is held constant. If volume increases, then pressure decreases and vice versa, when temperature is held constant.
Yeah, except when it's not. The two fingers held aloft in a V are fine provided your palm is facing out, but in some countries -- namely, Australia, New Zealand, and the United Kingdom -- it's an insult of the first order if you make the same gesture but with your palm facing inward.
Definition from Wiktionary, the free dictionary. In hold-move charts, sign language hand configurations are specified in separate attributes for the forearm, the fingers, and the thumb. In entry pagenames, there are two types of handshape specifications. One type is used in entry pagenames for select handshapes with common names.