phase (redirected from Phase (disambiguation))

phase (fāz)

1. one of the aspects or stages through which a varying entity may pass.

2. in physical chemistry, any physically or chemically distinct, homogeneous, and mechanically separable part of a system.pha´sic

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erythrocytic phase  that phase in the life cycle of a malarial plasmodium in which the parasites multiply in the red blood cells.

five phases  in traditional Chinese medicine, a set of dynamic relations (designated earth, metal, water, wood, and fire) that can be used to categorize relationships among phenomena.

follicular phase  the first half of the human menstrual cycle, lasting from cessation of menstrual flow to the surge of luteinizing and follicle-stimulating hormones at the start of the ovulatory phase.

G1 phase  a part of the cell cycle during interphase, lasting from the end of cell division (the M phase) until the start of DNA synthesis (the S phase).

G2 phase  a relatively quiescent part of the cell cycle during interphase, lasting from the end of DNA synthesis (the S phase) until the start of cell division (the M phase).

luteal phase  the third phase of the human menstrual cycle, beginning with ovulation and ending, in the absence of fertilization, with the menstrual phase.

M phase  the part of the cell cycle during which mitosis occurs; subdivided into prophase, metaphase, anaphase, and telophase.

menstrual phase  the fourth phase of the human menstrual cycle, following the luteal phase in the absence of fertilization. The corpus luteum regresses and is shed through menstruation and growth begins for the ovarian follicle, leading to the next follicular phase.

ovulatory phase  the second phase of the human menstrual cycle, encompassing the surges of luteinizing and follicle-stimulating hormones, and ovulation; it is followed by the luteal phase.

S phase  a part of the cell cycle, near the end of interphase, during which DNA is synthesized; between the G1 and G2 phases.

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phase (fz)

n.

1. A characteristic form, appearance, or stage of development that occurs in a cycle or that distinguishes some individuals of a group.

2. A discrete homogeneous part of a material system that is mechanically separable from the rest, as is ice from water.

3. Any of the forms or states, solid, liquid, gas, or plasma, in which matter can exist, depending on temperature and pressure.

4. A particular stage in a periodic process or phenomenon such as a wave form or time pattern.

v.

To introduce, one stage at a time.

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phase

[fāz]

Etymology: Gk, phasis, appearance

in a periodic function, such as rotational or sinusoidal motion, the position relative to a particular part of the cycle.

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phase

1. one of the aspects or stages through which a varying entity may pass.

2. In physical chemistry, a component that is homogeneous of itself, bounded by an interface, and mechanically separable from other phases of the system.

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continuous phase

in a heterogeneous system, the component in which the disperse phase is distributed, corresponding to the solvent in a true solution.

disperse phase

the discontinuous portion of a heterogeneous system, corresponding to the solute in a true solution.

phase feeding

a poultry feeding strategy based on varying the amount and kind of feed fed with varying egg production levels, body weight, age, environmental temperature and cost of feed ingredients.

phase plate

a critical component of a phase microscope.

phase transition temperature

temperature, usually between 30°C and 40°C, at which biological membranes change from a rigid gel phase to a thinner, more fluid phase.

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phase 

The state of vibration of a light wave at a particular time. Light waves vibrating with the same frequency are said to be in phase if their peaks and troughs occur at the same time; otherwise they are said to be out of phase and one wave lags or precedes another by a phase difference (e.g. a fraction of a wavelength, or one wavelength, or a number of wavelengths). For waves exactly out of phase the phase difference is half a wavelength and for waves exactly in phase it is 0. See interference; wavelength.

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phase

Medtalk A step in a process or cycle. See Acceleration phase, Burned-out phase, Chronic phase, Conceptive phase, Delayed sleep phase, Initial phase, Lag phase, Oepidal phase, Plateau phase, Prevascular phase, Proliferative phase, Recovery phase, Resting phase, Secretory phase, Shock phase, Stance phase, Swing phase, Take-off phase.

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Patient discussion about Phase (disambiguation).

Q. What is the second phase of alcohol rehab? I guess the first one is well known... admitting you are addicted, but then what?

A. anybody??? advises about the second phase of rehab??

Q. what is the window phase for HIV?

A. The 'window' period for HIV infection describes the strong immune defense that reduces the number of viral particles in the blood stream, marking the start of the infection's clinical latency stage. Clinical latency can vary between two weeks and 20 years. During this early phase of infection, HIV is active within lymphoid organs, where large amounts of virus become trapped in the follicular dendritic cells. The surrounding tissues that are rich in CD4+ T cells may also become infected, and viral particles accumulate both in infected cells and as free virus. Individuals who are in this phase are still infectious.