All G&A a/c A/D a/r A/S a/s/l C/A See all meanings Idioms and phrases over a collision course idiomAbout 1000 bce, in Byblos and other Phoenician and Canaanite centres, the indicator was offered a linear variety (3), the source of all later on kinds. In Semitic languages this indication was termed alephIn algebra, the letter a together with a varie