- substratal
[substratal 词源字典]
- "Of or relating to a substratum; forming a substratum; underlying; fundamental; (now chiefly Linguistics ) of or relating to a substrate language", Mid 19th cent.; earliest use found in The New Monthly Magazine. Partly from substrate + -al, and partly from substratum + -al.[substratal etymology, substratal origin, 英语词源]