hypo- (indicating the lowest oxidation state)
 chalk (mineral);  white wall
 subhuman;  demi-human;  Argentinian (person); (arch.)  American (person)
 (inferior) imitator;  epigone;  poor imitation;  follower;  adherent;  person belonging to the same school (e.g. of thought)
 near light speed;  sublight speed
 arsenious acid;  arsenous acid (H3AsO3);  arsenic trioxide;  white arsenic (As2O3)
 arsenious acid;  arsenous acid (H3AsO3);  arsenic trioxide;  white arsenic (As2O3)
 sulfurous acid;  sulphurous acid
 subacute;  subacute illness
 subgroup (of the periodic table);  subtribe
 Argument for Leaving Asia;  Datsu-A Ron;  editorial written by Fukuzawa Yukichi in 1885 calling for Japan to align itself with the West rather than China and Korea
 phosphonic acid (H3PO3);  phosphorous acid
 phosphonic acid (H3PO3);  phosphorous acid
 suboscines (songbirds of suborder Tyranni)
 stadial (period of lower temperatures during an interglacial period);  stade
 interstadial (period of higher temperatures during a glacial period);  interstade
 subcanopy tree;  understory tree;  semi-tall tree
 antimonious acid;  antimonous acid
 submetallic luster;  submetallic lustre