A prefix from the Latin
ultra beyond (see
Ulterior), having in composition the signification
beyond,
on the other side, chiefly when joined with words expressing relations of place;
as, ultramarine, ultramontane, ultramundane, ultratropical, etc. In other relations it has the sense of
excessively,
exceedingly,
beyond what is common,
natural,
right, or
proper;
as, ultraconservative; ultrademocratic, ultradespotic, ultraliberal, ultraradical, etc. [
1913 Webster]