2263: alchemy & chemistry Feb 25, 2021

Alchemy is to chemistry as astrology is to astronomy.

For much of history each pair was basically considered the same, as both had mystical and occult elements associated with them, and indeed even the more so-to-speak scientific aspects of these disciplines were in service of the spiritual ones until fairly recently. This is actually where the sense of chemistry relating to romantic attraction comes in. The connection between 'astrology' and 'astronomy' is fairly obvious, but the etymological connection between 'alchemy' and 'chemistry' is obscured somewhat by Arabic, with the al- just being the Arabic definite article i.e. 'the'. Otherwise the words have the same roots—even though the exact root is the cause of some disagreement—and really just means 'science'. Indeed, in the 17th century both words had a reduction in meaning, having both related to the occult, natural philosophical, as well as what might be thought as chemistry today or even metallurgy. Now, 'alchemy' only kept the sense of the pursuit of transforming base metals into gold and similar processes.

2262: alchemy Feb 24, 2021

No one knows the precise origin of the word 'alchemy', but that doesn't mean we can't learn a lot from it. For one thing, although there is a principle in more modern words for Arabic loan words, this is a case wherein the Arabic (al-) meaning 'the' does not turn into 'au-' in French, even though it was borrowed into English from Old French from an earlier Arabic اَلْكِيمِيَاء‎ (al-kīmiyā). Beyond that, it is not quite certain. An even earlier in Greek χημεία (khēmeía) refers to a liquid mixture extracted from gold, not creating it, from a root meaning 'to pour', but many think it it originally Egyptian. At that, people aren't sure which word it would be, but the leading candidate seems to be Χημία (Khēmía), a name for Egypt itself literally meaning, 'black earth'. Indeed, as happens in many cases, the answer is likely influence from both sources, especially considering that there was a lot of cross-cultural contact in the Ancient world.