[feɪz], (Noun)

Definitions:
- a distinct period or stage in a series of events or a process of change or development
(e.g: the final phases of the war)

- each of the aspects of the moon or a planet, according to the amount of its illumination, especially the new moon, the first quarter, the full moon, and the last quarter

- a genetic or seasonal variety of an animal's coloration
(e.g: the invertebrate residents of the tundra pass the winter in dormant phase)

- a distinct and homogeneous form of matter (i.e. a particular solid, liquid, or gas) separated by its surface from other forms
(e.g: solid carbon dioxide passes directly into the gas phase without becoming a liquid)

- the relationship in time between the successive states or cycles of an oscillating or repeating system (such as an alternating electric current or a light or sound wave) and either a fixed reference point or the states or cycles of another system with which it may or may not be in synchrony
(e.g: there are two output channels, one fixed in phase and the other variable in phase between 0 and 360 degrees)

- (in systemic grammar) the relationship between a catenative verb and the verb that follows it, as in she hoped to succeed and I like swimming


Phrases:
- in phase
- out of phase

Origin:
mid 17th century (in phase): from French phase and late Latin phasis, based on Greek phasis ‘appearance’, from the base of phainein ‘to show’

[feɪz], (Verb)

Definitions:
- carry out (something) in gradual stages
(e.g: the work is being phased over a number of years)

- adjust the phase of (something), especially so as to synchronize it with something else
(e.g: about 70% of the reflections were phased by this method)


Phrases:
- in phase
- out of phase

Origin:
mid 17th century (in phase): from French phase and late Latin phasis, based on Greek phasis ‘appearance’, from the base of phainein ‘to show’