Currently converting food into chyme; in the process of stomach digestion; or describing something that performs this function.
From 'chymify' + '-ing' (present participle/gerund). The -ing form works as both a verb form (the action of chymifying) and an adjective (something that chymifies).
Your 'chymifying stomach' is working right now if you just ate—the -ing form captures the ongoing, continuous action of digestion, which is fitting because your stomach doesn't stop and start; it keeps churning smoothly until everything is ready for the next stage.
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