A phase is a particular period of time, like someone whose "teenage rebellion" phase lasts well into her thirties.

The word phase can mean a stage in a person’s development or a step in a process, such as “the next phase in the Interstate 57 project.” Phase can also be a verb, usually followed by in or out, to mean slowly introducing or getting rid of something. For example, your school might phase in a new rule or phase out an old one, as new students arrive.

Definitions of phase
  1. noun
    any distinct time period in a sequence of events
    synonyms: stage
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    the final stage of the prophase of meiosis
    the fourth stage of the prophase of meiosis
    the first stage of the prophase of meiosis
    the third stage of the prophase of meiosis
    phase of cell division
    a stage in meiosis or mitosis
    the second stage of the prophase of meiosis
    anal phase, anal stage
    (psychoanalysis) the second sexual and social stage of a child's development during which bowel control is learned
    genital phase, genital stage
    (psychoanalysis) the fifth sexual and social stage in a person's development occurring during adolescence; interest focuses on sexual activity
    latency period, latency phase, latency stage
    (psychoanalysis) the fourth period (from about age 5 or 6 until puberty) during which sexual interests are supposed to be sublimated into other activities
    oral phase, oral stage
    (psychoanalysis) the first sexual and social stage of an infant's development; the mouth is the focus of the libido and satisfaction comes from suckling and chewing and biting
    phallic phase, phallic stage
    (psychoanalysis) the third stage in a child's development when awareness of and manipulation of the genitals is supposed to be a primary source of pleasure
    any distinct period in history or in a person's life
    (pathology) the phase in the development of an infection between the time a pathogen enters the body and the time the first symptoms appear
    fertile period, fertile phase
    the time in the menstrual cycle when fertilization is most likely to be possible (7 days before to 7 days after ovulation)
    menstrual phase
    the phase of the menstrual cycle during which the lining of the uterus is shed (the first day of menstrual flow is considered day 1 of the menstrual cycle)
    an annual phase of heightened sexual excitement in the males of certain large mammals (especially elephants); is associated with discharge from a gland between the eye and ear
    luteal phase, secretory phase
    the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins
    a stage of technological development or innovation
    apogee, culmination
    a final climactic stage
    any time of new development
    safe period
    that time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation)
    the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
    the second stage of mitosis
    the second stage of meiosis
    the first stage of mitosis
    the first stage of meiosis
    the final stage of mitosis
    the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle
    type of:
    period, period of time, time period
    an amount of time
  2. noun
    a particular point in the time of a cycle; measured from some arbitrary zero and expressed as an angle
    synonyms: phase angle
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    type of:
    point, point in time
    an instant of time
  3. noun
    (astronomy) the particular appearance of a body's state of illumination (especially one of the recurring shapes of the part of Earth's moon that is illuminated by the sun)
    “the full phase of the moon”
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    phase of the moon
    a time when the Moon presents a particular recurring appearance
    new moon, new phase of the moon
    the time at which the Moon appears as a narrow waxing crescent
    the time at which the Moon is at first or last quarter when half its face is illuminated
    full, full moon, full phase of the moon, full-of-the-moon
    the time when the Moon is fully illuminated
    type of:
    appearance, visual aspect
    outward or visible aspect of a person or thing
  4. verb
    arrange in phases or stages
    phase a withdrawal”
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    type of:
    arrange, stage
    plan, organize, and carry out (an event)
  5. verb
    adjust so as to be in a synchronized condition
    “he phased the intake with the output of the machine”
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    type of:
    sync, synchronise, synchronize
    make synchronous and adjust in time or manner
  6. noun
    (physical chemistry) a distinct state of matter in a system; matter that is identical in chemical composition and physical state and separated from other material by the phase boundary
    “the reaction occurs in the liquid phase of the system”
    synonyms: form
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    dispersed particles, dispersed phase
    (of colloids) a substance in the colloidal state
    dispersing medium, dispersing phase, dispersion medium
    (of colloids) a substance in which another is colloidally dispersed
    type of:
    state, state of matter
    (chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)
Commonly confused words

faze / phase

To faze is to disturb, bother, or embarrass, but a phase is a stage or step. It could faze your family if your princess phase lasts well into your college years.

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