Longman Dictionary of Contemporary English homepage

Topic: ASTRONOMY

Date: 1800-1900
Language: Modern Latin
Origin: phasis, from Greek, 'appearance of a star, phase of the moon', from phanein 'to show, appear'

phase

1 noun
     
phase1 W2 [countable]
1 one of the stages of a process of development or change:
a new drug that is in the experimental phase
phase of
The first phase of renovations should be finished by January.
in phases
The work will be carried out in phases.
It's just a phase he's going through.
2

out of phase (with something)

British English not happening together in the right way:
Nizan's views were out of phase with the political climate of the time.
3

in phase (with something)

British English happening together in the right way:
The electrical work will be carried out in phase with the other renovations.
4HA technical one of a fixed number of changes in the appearance of the moon or a planet when it is seen from the Earth
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