Synonyms of the word

bidirectional

• adj. Moving in two directions (usually opposite).
• adj. Operating or functioning in two directions (usually opposite).

biface

• n. (archaeology) A double-sided stone tool.

bifacial

• adj. Having two faces or opposing surfaces.
• adj. (archaeology, of a flint tool) Having two sharp cutting edges.

duplex

• adj. Double, made up of two parts.
• adj. (telecommunications) Bidirectional (in two directions).
• n. (US) House made up of two dwelling units.
• n. (philately) A cancellation combining a numerical cancellation with a second mark showing time, date, and…
• n. (juggling) Throwing motion where two balls are thrown with one hand at the same time.
• v. To make duplex.
• v. To make into a duplex.
• v. (juggling) To make a series of duplex throws.

two-way

• adj. (of a highway) allowing traffic in two directions.
• adj. (of traffic) moving in both directions.
• adj. (of a radio, etc.) permitting communication in two directions.
• adj. (of a project, treaty, etc.) involving the mutual action or participation of two parties.
• adj. (American football) Playing both offense and defense in the same game.
• n. A serving of Cincinnati chili with spaghetti.