A polycode metaphor is a figurative expression that simultaneously operates across multiple semiotic systems or cultural codes—such as visual, musical, scientific, or mythological—so that a single image or comparison resonates with layered meanings accessible to different interpretive frameworks; for example, describing a lover’s eyes as “black holes” invokes astrophysical concepts (gravity, inescapability), emotional intensity (mystery, depth), and pop-culture allusions, thereby creating a metaphor that is richly ambiguous and context-dependent, inviting readers to navigate intersecting discourses within a single poetic utterance.

Polycode metaphor operates across multiple sign systems (e.g., visual, linguistic, cultural); rich in intertextual potential—anchor in accessible reference points to avoid obscurity.