飛ひ沫まつ核かくひまつかくMeanings1noundroplet nucleusmedicineMedical term for the small particles that remain after the liquid part of a respiratory droplet evaporates, capable of airborne transmission.飛ひ沫まつ核かくは空くう気き中ちゅうを長ちょう時じ間かん漂ただようことがある。Droplet nuclei can float in the air for a long time.