The South African flower Mesembryanthemum draws its name from the Greek roots for middle, embryo, and flower.

It’s believed to be the English word containing the highest “score” in Roman numerals — four Ms.

01/19/2025 UPDATE: The Scrabble word list CSW24 includes 10 words with four Ms: MAMMECTOMIES, MAMMECTOMY, MAMMIFORM, MAMMILLIFORM, MAMMOGRAM, MAMMOGRAMS, MAMMONISM, MAMMONISMS, MUMMIFORM, and MUMMIFORMS. Of these, the highest Roman numeral scores would be MAMMILLIFORM (4102), MAMMECTOMIES (4101), and MAMMECTOMY (4100). Too long for Scrabble, the 17-letter IMMUNOCOMPROMISED also has four Ms and tallies to 4602. (Thanks, Michael.)