TITLE: Why “syntomic” if “flat, locally of finite presentation, and local complete intersection” is already available?
QUESTION [15 upvotes]: Dear everyone,
(i) Who is the father of the adjective “syntomic” in algebraic geometry?
(ii) And why did he choose to introduce a new term for what we already know from EGA IV.19.3.6 and SGA 6.VIII.1.1 as “flat, locally of finite presentation, and local complete intersection”? 
Thanks!

REPLY [25 votes]: Mazur gives the following beautiful justification, which explains the “syn-” in “syntomic” as well.

Dear Thanos,
Thanks for your question.  I'm thinking of “ local complete
  intersection” as being a way of cutting out a (sub-) space from an
  ambient surrounding space; the fact that it is flat over the parameter
  space means that each such "cutting" as you move along the  parameter
  space, is---more or less---cut out similarly. I'm also thinking of the
  word "syntomic" as built from the verb temnein (i.e., to cut) and the
  prefix "syn" which I take in the sense of "same" or "together".  So I
  think it  fits.
Best wishes,
Barry