τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
ἀθηλής, -ές (Α)θηλή (για μαστό) αυτός που δεν χρησιμοποιήθηκε για θήλασμα.