A note on Greek ἰκμάς

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Abstract The Greek word ἰκμάς ‘moisture’ and its derivatives reflect a PIE root usually reconstructed as either *sei̯kʷ‑ or *sei̯k‑. After a survey of the comparanda, it is concluded that only the Greek form points to *sei̯k-, while reflexes in other branches, particularly Germanic, explicitly require *sei̯kʷ‑. A solution to this problem is then suggested in the form of a new Greek sound law *Kʷm > Km. The traditional view, which treats the development of *Kʷm as identical to that of *Pm, is shown to be untenable: forms such as ὄμμα ‘eye’ (Transponat *h₃okʷ‑mn̥) do not reflect inherited formations, but are rather to be understood as created within Greek after the general post-Mycenaean development *Kʷ > P. The sequence μμ found in such words therefore reflects underlying *Pm rather than *Kʷm. Finally, three further possible examples of Kʷm > Km are presented.