(chemistry) The divalent radical formed from two separate hydrogen atoms or ions / (chemistry, modifying a noun) Describing a dihydrogen bond / (inorganic chemistry) The hydrogen molecule H₂

plural of summonable

A surname transferred from the nickname for someone who came from Denmark, also a variant of Dean. / A male given name transferred from the surname, or from the ethnic term Dane (like Scott or Norm...

(medicine) The taking of blood from one individual and inserting it or blood-based products into the circulatory system of another.