The present participle of disembogue; the process of flowing out or discharging into a larger body of water.
From the verb 'disembogue,' which combines 'dis-' meaning out and 'embogue' from Spanish/French roots meaning to empty or discharge. The '-ing' suffix forms the continuous present tense.
Rivers are constantly disemboguing, but we rarely use this word anymore—we just say 'the river flows into the ocean.' Languages naturally shed specialized terms when they're no longer needed, and this one got replaced by simpler alternatives.
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