Dephasing

Part of speech: noun, verb

Definitions

1. The process by which the phases of waves or signals lose coherence over time or distance, causing a reduction in their combined amplitude or synchronized effect; a phenomenon where components of a system fall out of step leading to diminished performance or altered behavior
2. The alteration of relative phases between waves or oscillations resulting in a loss of constructive interference or predictable timing; a shift causing elements initially in alignment to become unsynchronized or drift apart in timing or position
3. The change leading to the divergence of phase relationships among periodic signals or oscillations, which undermines the uniformity of their combined output; the disruption of phase matching that impacts coherence and signal integrity in physical or electronic systems

Etymology: "Dephasing" is a plain technical formation: the prefix "de-", meaning "away from" or "reversal of," attached to "phasing." "Phasing" itself comes from "phase," which traces back through Greek "phasis" (appearance, a showing) to the verb "phainein" (to show, to bring to light). In physics, a phase is the point a wave has reached in its cycle, so "dephasing" describes waves being pulled out of step with one another. The "de-" prefix comes from Latin "de," meaning "from" or "down," which English has long used to form words meaning removal or reversal, such as "decode" or "deforest." Here it reverses the alignment that "phasing" describes, so the meaning is closer to "undoing the phase relationship" than to simply "separating."

Synonyms: desynchronizing, disaligning, unsynchronizing

Antonyms: synchronizing, aligning, phasing