A prefix meaning 'six,' used in scientific and technical terms, especially in chemistry and geometry.
From Greek 'hex' meaning six, related to Latin 'sex.' The prefix has been used in English since the Renaissance to form scientific terminology, combining with roots to describe structures or compounds containing six units.
Greek numerical prefixes like 'hexa-' are scientific Esperanto—chemists worldwide use the same prefixes to instantly communicate about molecules, making chemistry one of the most internationally unified languages on Earth.
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