Substances that comprise all matter. Each element is made up of atoms that are identical in number of electrons and protons and in nuclear charge, but may differ in mass or number of neutrons.
ID
http://purl.bioontology.org/ontology/MESH/D004602
AN
GEN only; prefer specifics; ISOTOPES (little used) & RADIOISOTOPES & many specifics are also available; m for metastable = RADIOISOTOPES or specific pre-coord radioisotope
cui
C0013879
DC
1
definition
Substances that comprise all matter. Each element is made up of atoms that are identical in number of electrons and protons and in nuclear charge, but may differ in mass or number of neutrons.