chernozem (n.)youdaoicibaDictYouDict
1842, from Russian chernozem, literally "black earth," from chernyi "black," from PIE *kers- "dark, dirty" (see Krishna) + zemlya "earth, soil," from Old Russian zemi "land, earth," from PIE *dhghem- "earth" (see chthonic).
chthonic (adj.)youdaoicibaDictYouDict
1882, with suffix -ic, from Greek khthonios "of the earth, in the earth," from khthon "the earth, solid surface of the earth" (mostly poetic) from PIE root *dhghem- (cognates: Greek khamai "on the ground," first element in chameleon; also Latin humus "earth, soil," humilis "low;" Lithuanian žeme, Old Church Slavonic zemlja "earth;" Sanskrit ksam- "earth" (opposed to "sky"); Old Irish du, genitive don "place," earlier "earth").
homunculus (n.)youdaoicibaDictYouDict
1650s, from Latin homunculus, literally "little person," from homo (genitive hominis) "man, human being," the Latin word that means "man, person, a human being" (technically "male human," but in logical and scholastic writing "human being"), also "the human race, mankind," perhaps from PIE *(dh)ghomon-, literally "earthling," from *dhghem- "earth" (see chthonic; also compare human). With -culus, Latin diminutive suffix. Other Latin diminutives from homo included homullus, homuncio.
humus (n.)youdaoicibaDictYouDict
1796, from Latin humus "earth, soil," probably from humi "on the ground," from PIE *dhghem- "earth" (source also of Latin humilis "low;" see chthonic). Related: Humous (adj.).
phthisis (n.)youdaoicibaDictYouDict
1520s, from Late Latin phthisis "consumption," from Greek phthisis "wasting, consumption; perishing, decay; waxing," from phthiein "to decay, waste away," from PIE root *dhgwhei- "to perish, die away" (cognates: Sanskrit ksitih "destruction," ksinati "perishes").
yester-youdaoicibaDictYouDict
Old English geostran "yesterday," from Proto-Germanic *gester- (cognates: Old High German gestaron, German gestern "yesterday," Old Norse gær "tomorrow, yesterday," Gothic gistradagis "tomorrow"), originally "the other day" (reckoned from "today," either backward or forward), from PIE root *dhgh(y)es- "yesterday" (cognates: Sanskrit hyah, Avestan zyo, Persian di, Greek khthes, Latin heri, Old Irish indhe, Welsh doe "yesterday;" Latin hesternus "of yesterday").