section a-a a-a

come to a close

come to a decision

come to a full stop

come to a period

come to a person’s aid

come to a point

come to a sticky end

to come to an end

head to head

head to head configuration

head to head structure

head-to-head

head-to-head polymer

A-A-A conjugation structure

S-A(A-A) missile

A.A.A.

a modest spur to induce others to come forward with valuable contributions

come a howler