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  3. /aster

aster

Greek

Variants

asterastrastro

Related Roots

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About This Root

From Greek astron and Latin astrum (star). Powers astronomy vocabulary — astronaut (star sailor), astronomy (star arrangement/study), astronomical (immensely large, like star distances). The star flower aster is named for its shape. Disaster (dis- + astrum) originally meant 'bad star' — an ill-fated celestial omen.

Associated Words

asterisk

The star-shaped symbol (*); to mark with this symbol

GREC2

asteroid

A rocky body orbiting the Sun, smaller than a planet

TOEFLGREC2

astro-engineer

An engineer specializing in space or aerospace technology

astrolabe

A historical instrument for measuring the altitude of stars

GREC2

astrologer

A person who predicts events based on the positions of stars and planets

C2

astrological

Relating to astrology or the study of celestial influence on human affairs

C2

astrology

The belief that celestial positions can predict human affairs

GREC2

astronaut

A person trained to travel in space

A2

astronautical

Relating to astronauts or space travel

A2

astronautics

The science and technology of space flight

C2

astronomer

A scientist who studies the stars and universe

TOEFLB1

astronomical

Relating to astronomy; extremely large

TOEFLGREC1

astronomically

To an enormously large degree; relating to astronomy

C2

astronomy

The scientific study of stars, planets, and the universe

IELTSTOEFLB2

astrospace

Outer space beyond Earth's atmosphere

calamity

A sudden event causing great damage or suffering; a disaster

IELTSGREC2

cataclysm

A sudden, violent large-scale disaster or upheaval

TOEFLGREC2

cataclysmic

Causing great destruction or upheaval

C2

catalog

A systematic list of items or products; to classify into a catalogue

NGSL 3kIELTSGRE

cataract

A clouding of the eye's lens; a large waterfall

C2

catastrophe

A sudden large-scale disaster causing great suffering

IELTSTOEFLGRE

catastrophic

Causing great damage or disaster

B2

consider

To think about seriously

NGSL 1kTOEFLA2

disaster

A sudden catastrophic event causing great damage or suffering

NGSL 3kIELTSTOEFL

disastrous

Causing great damage or failure; catastrophic

TOEFLB1

disastrously

In a way that causes great harm or failure

C2

interstellar

Existing or occurring in the space between stars

TOEFLC1

post-disaster

Occurring or relating to the period after a disaster

star

a luminous body in the sky; a famous performer; to be the lead actor

NGSL 1kIELTSA1

stardom

The status or fame of being a celebrated performer

TOEFLC2

starry

Full of visible stars; resembling a star; 繁星点点的,星光灿烂的

C2