A small hill, mound, or rounded elevation, often used in anatomy to describe small eminences on body structures.
From Latin 'colliculus,' diminutive of 'collis' (hill). The term diminishes the root concept—a small hill becomes a 'little collis,' reflecting how scientific language often names structures after familiar landscape features.
Anatomists named brain structures 'colliculi' (little hills) because they literally look like tiny hills under a microscope—showing how metaphor and observation blend in scientific naming.
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