Abstract
The theory of Kloekhorst about the phonetic interpretation of the Hieroglyphic Luwian sign *19 〈á〉 as a glottal stop + a (etymologically matching Proto- Indo-European *h1) was seriously criticized by several scholars. This paper gives a critical assessment of the views published until now and provides additional evidence. It will be argued that evidence from seal inscriptions that use this - and only this sign - for the transcription of the glottal stop and present cases where only the assumption of a glottal stop leads to regular spellings confirm the interpretation as a glottal stop, which is further corroborated by Cuneiform Luwian and etymological evidence.
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