Resembling or having the nature of hair; thin and threadlike in structure.
From Latin capillus 'hair' plus the English suffix -aceous 'resembling or having qualities of.' The root capillus comes from a Proto-Indo-European word for hair.
Scientists use 'capilaceous' to describe things that look hairy under a microscope—some fungi and root structures are capilaceous, which is why magnification reveals the hidden hair-like details in nature!
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