| gypsum |
a mineral, hydrated calcium sulfate, that resembles chalk and is used to make plaster of Paris, plaster and wallboard, and fertilizers. |
| Gypsy |
one of a nomadic people, originally from India, now found throughout the world. [3 definitions] |
| gypsy moth |
a moth having as its larva a hairy caterpillar that is extremely destructive to foliage. |
| gyrate |
to move or revolve on or around a fixed point or axis, or in a circle or spiral; rotate; spin. |
| gyration |
the act of gyrating; rotation. |
| gyre |
a ring, circle, or spiral. [2 definitions] |
| gyrfalcon |
any of several large falcons found in or near the arctic, having white, gray, and black plumage. |
| gyro1 |
a gyroscope. [2 definitions] |
| gyro2 |
a sandwich made of pita bread stuffed with meat roasted on a rotating spit or skewer and various vegetables and condiments. |
| gyro- |
spinning; spiral. |
| gyrocompass |
a navigational device with a gyroscope rotor that maintains a stable orientation toward true north. |
| gyroscope |
a device with a rotating wheel or disk, mounted on an axis that can turn freely in various or all directions, so that the wheel or disk can maintain a stable orientation in space despite any movement in its supports or surrounding parts. |
| gyrostabilizer |
a stabilizing device on planes and ships, consisting of a heavy, vertically mounted gyroscope whose spinning reduces the side-to-side motion of the craft. |
| H |
symbol of the chemical element hydrogen. |
| h |
the eighth letter of the English alphabet. [2 definitions] |
| Ha |
symbol of the chemical element hahnium. |
| ha |
used as an exclamation of triumph, surprise, discovery, perplexity, or annoyance. |
| Habakkuk |
a minor Hebrew prophet of the seventh century B.C. [2 definitions] |
| habeas corpus |
in law, a writ calling for a detained person to be brought before a court, designed to insure against unlawful detention or imprisonment. |
| haberdasher |
in the United States, a retailer of menswear. |
| haberdashery |
a shop that sells men's clothing and furnishings. [2 definitions] |