Middle dot

Classical Latin inscriptions separated words with a raised dot called an interpunct, sometimes carved as a tiny triangle. The practice fell out of use in approximately 200 AD.

Catalan still relies on it. In the ela geminada, l·l, the dot shows that the two Ls belong to different syllables, as in col·lecció. Japanese uses a middle dot between foreign words written in katakana, and mathematicians use a similar dot for multiplication.