catechu

Catechu is the learned twin of cutch. The word entered English through early modern medical Latin, where apothecaries and botanists preferred a classical-looking label for the dark astringent extract prepared from acacia. Behind the Latin stood Indian vernacular forms related to kattha and older Sanskrit tree names such as khadira. Science often pretends to rise above markets, then quietly borrows the market's goods.

European physicians encountered the substance through Portuguese and later British contact with South Asia in the sixteenth and seventeenth centuries. Once it entered pharmacological writing, the form catechu spread faster than any single spoken Indian source form. The spelling looked authoritative because it was opaque. Learned language has always loved a fog machine.

By the eighteenth century, catechu was standard in botanical and medical English, especially in descriptions of Acacia catechu and in materia medica. It existed alongside cutch, which remained the practical trade name. One word worked in ledgers, the other in Latin prescriptions. They pointed to much the same brown extract.

Today catechu sounds technical, antique, and slightly medicinal. It survives in botany, pharmacology history, and discussions of traditional preparations in South Asia. The word is a museum label, but the substance behind it is still real. The Latin stayed because print likes prestige.