| Word | Definition |
|---|---|
| atomics n. 1 (1932) | any device powered by nuclear energy, esp. a nuclear-powered engine |
| atomics n. 2 (1943) | atomic weapons |
| autodoc n. (1966) | a system providing automated medical care |
| auton n. (1970) | an autonomous robot or robotic device; (specif. in form Auton) in the British television series Doctor Who: one of a group of malevolent humanoid robots having plastic-like skin |
| avatar n. (1986) | a VR representation of a person |
| avian n. (1948) | a bird-like alien |
| avian adj. (1931) | (of an alien) bird-like |
| beam v. (1951) | to travel through space as if along a beam of light or energy; to transport (someone or something) in this manner |
| beam weapon n. (1936) | a weapon that fires a destructive beam of energy |
| beanstalk n. (1982) | = space elevator n. |
| Belter n. (1966) | a native or resident of an asteroid belt n. |
| BEM n. (1940) | = bug-eyed monster n. |
| big dumb object n. (1981) | a large, mysterious, alien-made artifact encountered in space or on another world |
| biocomputer n. (1952) | a computer having components and circuits formed from or modelled on biological molecules or structures |
| bionic adj. (1941) | of or pertaining to bionics; having or being an artificial, esp. electromechanical, device that replaces part of the body; having ordinary human capabilities increased (as if) by the aid of such devices |
| biopunk n. (1991) | a subgenre of science fiction which focuses on the societal effects of biotechnology and genetic engineering |
| biotechnician n. (1940) | a person, esp. a laboratory technician, involved in biotechnics or biotechnology |
| blaster n. (1925) | a weapon that fires a destructive beam of energy |
| blast-off n. (1937) | the initial thrust required to launch a rocket or the like into space; the launching of the rocket itself |
| blast off v. (1937) | (of a person or being) to take off in a spaceship, esp. one propelled by rockets; (of a spaceship) to take off |
| blast rifle n. (1935) | a long shoulder weapon that fires a destructive beam of energy; cf. blaster n. |
| blowup n. (1945) | a war that destroys a culture or a large part of the population |
| blue pill n. (1998) | a drug that allows one to remain ignorant of reality; cf. red pill n. |
| BNF n. (1948) | someone who is extremely prominent within a particular fandom |
| boat n. (1930) | = spaceship n. |
| Borg n. (1989) | in the fictional universe of the Star Trek franchise: a group of cybernetically enhanced aliens linked in a hive mind |
| bot n. (1969) | a robot |
| braintape n. (1946) | a recording of the (entire) contents of a personβs mind |
| Buck Rogers adj. (1934) | = science fictional adj.; characteristic of hackneyed or dated science fiction |
| bug-eyed monster n. (1939) | a monstrous alien with bulging eyes, esp. as a stereotype |