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Related to phasic: FASIC


1. A distinct stage of development: "The American occupation of Japan fell into three successive phases" (Edwin O. Reischauer).
2. A temporary manner, attitude, or pattern of behavior: just a passing phase.
3. An aspect; a part: We must reconsider every phase of the operation.
4. Astronomy
a. One of the cyclically recurring apparent shapes of the visibly illuminated portion of the moon or a planet.
b. The relative configuration, measured in angular units such as degrees or radians, of two orbiting bodies that periodically eclipse.
5. Physics
a. A particular stage in a periodic process or phenomenon.
b. The fraction of a complete cycle elapsed as measured from a specified reference point and often expressed as an angle.
6. Chemistry
a. Any of the forms or states, solid, liquid, gas, or plasma, in which matter can exist, depending on temperature and pressure.
b. A discrete homogeneous part of a material system that is mechanically separable from the rest, as is ice from water.
7. Biology A characteristic form, appearance, or stage of development that occurs in a cycle or that distinguishes some individuals of a group: the white color phase of a weasel; the swarming phase of locusts.
tr.v. phased, phas·ing, phas·es
1. To plan or carry out systematically by phases.
2. To set or regulate so as to be synchronized.
Phrasal Verbs:
phase in
To introduce, one stage at a time.
phase out
To bring or come to an end, one stage at a time.
in phase
In a correlated or synchronized way.
out of phase
In an unsynchronized or uncorrelated way.

[Back-formation from New Latin phasēs, phases of the moon, from Greek phaseis, pl. of phasis, appearance, from phainein, to show; see bhā- in Indo-European roots.]

pha′sic (fā′zĭk) adj.


a. fásico-a, rel. a una fase.
References in periodicals archive ?
We have decided to record respiration activity as well as tonic and phasic EDA parameters in our future studies.
Tonic units respond throughout the duration of the stimulus, while phasic units respond only at stimulus onset.
Head-up tilt: In 45 patients for whom syncope remained undiagnosed or the history was suggestive of vasovagal syncope or carotid sinus syncope, prolonged head-up tilt (Akrow table) to 70 |degrees~ for 45 min was carried out with simultaneous continuous heart rate and non-invasive phasic arterial blood pressure monitoring.
Different leadership styles are described along with project organization structures, classification of innovations, the phasic relation between equipment and services, and defect discovery models.
To evaluate the coordination of the activity of the tonic and phasic muscles during such escape responses, we recorded their force production by attaching a force gauge to the shell of intact scallops and then stimulating the scallops with starfish.
5] M)-induced phasic contraction in the epididymal portion, but decreased contractions in the prostatic portion.
Furthermore, they contrasted the traditional parapsychological way to parameterize the phasic component with methods adapted from psychophysiological research.
The evoked responses showed slowly and rapidly adapting impulse discharges or phasic and tonic responses, as shown in the inset of Figure 6.
With an emphasis on cognitive behavioral interventions, the book is divided into three main sections corresponding to Herman's (1992) Tri- phasic Model: safety and stabilization, remembrance and mourning, and reconnection.
In measuring skin conductance, one can distinguish two different principles: phasic and tonic ones.
Responses to the adapting pulse were phasic and terminated even when the odor was still present, indicating that the receptor cells completely adapted to the stimulus.
During this process, tonic and phasic outcomes are collected and analyzed (Fowles, 2008).