The word "hatchettine" is spelled with a "ch" sound as in "church" followed by "-ettine." This unique hybrid word combines "hatchet" and the suffix "-ettine" which denotes a chemical substance. In phonetic transcription, the word is /hætʃɪtɪn/ indicating the sound of "hatch" followed by "ettine" pronounced as "uh-teen." While not a commonly used word, its spelling and pronunciation highlight the creative use of language to describe and name new compounds.
There is no historical evidence to suggest that the word "Hatchettine" has its own established etymology. It appears to be a made-up or invented word with no specific origin or meaning in the English language. It is possible that the term was coined for a particular purpose or context, but without further information, it is challenging to determine its etymology or provide a definitive answer.