Pentathionic

Pen`ta·thi·on'ic adjective [ Penta- + thionic .] (Chemistry) Pertaining to, or designating, an acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide; -- so called because it contains five atoms of sulphur.
Found on http://www.encyclo.co.uk/webster/P/49

Pentathionic

• (a.) Pertaining to, or designating, an acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide; -- so called because it contains five atoms of sulphur.
Found on http://thinkexist.com/dictionary/meaning/pentathionic/
No exact match found