In English, s is used for many nouns to make the plural form. The s in boys has meaning. The s in school does not. It's every bit that tells you something about a word, such as prefixes, suffixes, root words, etc.

meaning less than 1 are written with a small letter (89 nm). With the exception that kilo (1000), hecto

Acceptable in published work and acceptable in Scrabble are very different things. True. I would assume any Scrabble dictionary is very much proper a subset of English. One wouldn't think so, judging from the comments made by passers-by on