aseptic.

Prepared or maintained to prevent contamination by harmful microorganisms.

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Words that belong together

• aseptic room

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The staff maintained an aseptic room.

The procedure required aseptic conditions.

Usage notes

Primary category: setting. Forms: Comparative more aseptic; superlative most aseptic where gradation is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.