The attachment organ or disk found on parasitic flatworms, used to grip and hold onto their host's tissue.
From Greek 'haptein' meaning 'to fasten or attach' + the noun suffix '-or.' This specialized biological term emerged in the 19th century as scientists studied parasites under microscopes and needed to describe the structures that allowed them to cling to hosts.
Haptors are nature's microscopic grappling hooks—some parasitic worms have multiple haptors armed with hooks and suckers so powerful that even if the host tries to expel them through natural digestive processes, they hold on for dear life.
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