| ASTROBIOLOGIES | • ASTROBIOLOGY n. exobiology. |
| ASTROBIOLOGIST | • astrobiologist n. A biologist whose speciality is astrobiology. • ASTROBIOLOGIST n. one who studies astrobiology. |
| ASTROCHEMISTRY | • astrochemistry n. (Chemistry, astronomy) The study of the chemical composition of stars and outer space. • ASTROCHEMISTRY n. the study of molecules and radicals in outer space. |
| ASTROCOMPASSES | • astrocompasses n. Plural of astrocompass. • ASTROCOMPASS n. a navigational instrument for giving directional bearings from the centre of the earth to a particular star. |
| ASTROGEOLOGIES | • ASTROGEOLOGY n. the study of extraterrestrial geology. |
| ASTROGEOLOGIST | • astrogeologist n. One who studies astrogeology. • ASTROGEOLOGIST n. a specialist in astrogeology. |
| ASTROLOGICALLY | • astrologically adv. In an astrological manner. • astrologically adv. With regard to astrology. • ASTROLOGICAL adv. relating to astrology, also ASTROLOGIC. |
| ASTRONAVIGATOR | • astronavigator n. One who performs astronavigation; an astronaut or space pilot. • ASTRONAVIGATOR n. one who practises astronavigation. |
| ASTRONOMICALLY | • astronomically adv. (Not comparable) Of or relating to astronomy. • astronomically adv. (Comparable, degree) In the extreme, very (typically very large). • ASTRONOMICAL adv. related to astronomy, also ASTRONOMIC. |
| ASTROPHYSICIST | • astrophysicist n. One who studies astrophysics. • ASTROPHYSICIST n. a student of astrophysics. |
| BIOASTRONOMIES | • BIOASTRONOMY n. the branch of biology which deals with the study or the discovery of life forms on other planets or in space. |
| CATASTROPHISMS | • catastrophisms n. Plural of catastrophism. • CATASTROPHISM n. belief in rapid geological and biological change. |
| CATASTROPHISTS | • catastrophists n. Plural of catastrophist. • CATASTROPHIST n. a believer in catastrophism. |
| ECOCATASTROPHE | • ecocatastrophe n. An ecological catastrophe, especially a man-made disaster that affects the environment. • ECOCATASTROPHE n. a major destructive upset in the balance of nature esp. when caused by the action of humans. |
| ENTEROGASTRONE | • enterogastrone n. Any hormone secreted by the mucosa of the duodenum in the lower gastrointestinal tract in response to… • ENTEROGASTRONE n. a hormone that is produced by the duodenal mucosa and has an inhibitory action on gastric motility and secretion. |
| GASTRODUODENAL | • gastroduodenal adj. (Anatomy) Relating to, or connecting the stomach and the duodenum. • GASTRODUODENAL adj. of, relating to, or involving the stomach and the duodenum. |
| GASTROPLASTIES | • gastroplasties n. Plural of gastroplasty. |
| GASTROSCOPISTS | • gastroscopists n. Plural of gastroscopist. • GASTROSCOPIST n. one who uses a gastroscope. |
| GASTROVASCULAR | • gastrovascular adj. (Anatomy) That has both a digestive and a circulatory function. • GASTROVASCULAR adj. functioning in both digestion and circulation. |