the abbreviation 'ant.' does not seem to be much in use according to the few occurences found in Google .fr.
The one I would agree with is 'antonyme' (contrary, antonym), hence the abbreviation 'ant.' that you can find in dictionaries.
There is no abbreviation for the title of Comtesse in French.
The abbreviation for the french measurement is "verge".
There is no abbreviation for June, same for May and July.
s-ant (like ant)
Ant is "fourmi" in French. This is a feminine noun, despite having no final "e".
There is no masculine for "une fourmi" (an ant in French).
Commonly in the world of furniture, home accessories etc the standard abbreviation for antique is A/Q or AQ.
the abbreviation "Enr." could be a short for "Enregistrement" (Record) in French
an abbreviation is called in French "une abréviation" (with a single 'b')
Je T'aime Anthony. ^ I love you ant/anthony
fr.
fr.