AQUA-
TELE-
ASTR-
SEMI-
TERR-
100

adj. Living in or having to do with water

AQUATIC

100

n. An instrument for making distant things look closer and larger

TELESCOPE

100

n. Space traveler

ASTRONAUT

100

adj. Occuring in half a year, every six months.

SEMIANNUAL

100

n. A large area  of land, a region; a settlement or country

TERRITORY

200

adj. A blueish-greenish color

AQUAMARINE

200

n. A broadcast by television

TELECAST

200

n. An expert in or student of astronomy.

ASTRONOMER

200

n. A punctuation mark that signals a break in a sentence, halfway between the full stop of a period and the short pause of a comma

SEMICOLON

200

n. Land or ground

TERRAIN

300

n. The science of raising plants and animals in water 

AQUACULTURE

300

n. An instrument invented in 1837 by Samuel Morse that used electricity passing through wires to send messages over distances

TELEGRAPH

300

n. The branch of science for the study of planets, stars, and space

ASTRONOMY

300

adj. Half or partly awake, not fully conscious, in a daze.

SEMICONSCIOUS

300

n. A large sea between two continents, southern Europe and northern Africa

MEDITERRANEAN

400

n. A water-filled enclosure in which aquatic animals are kept

AQUARIUM

400

n. Selling by telephone

TELEMARKETING

400

adj. Extremely large, huge

ASTRONOMICAL

400

adj. Having only part of the value of a precious gemstone

SEMIPRECIOUS

400

adj. Under the earth

SUBTERRANEAN

500

n. the 11th sign of the zodiac in astrology consisting of a constellation south of Pegasus pictured as a man pouring water

AQUARIUS

500

n. A meeting at which people see and talk to each other using long distance devices, such as telephones, televisions, and computers

TELECONFERENCE

500

n. An expert in or student of astrophysics

ASTROPHYSICS

500

adj. Requiring good clothes rather than play clothes

SEMIFORMAL

500

n. An area of ground on the side of a hill that has a flattened top in order to grow things

TERRACE

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