versin /vûrˈsin/ or versine /vûrˈsīn/ (mathematics)

Short for versed sine (see under versed²)

• at the first blush
• at the fore
• at the full
• at the hand of
• at the hands of
• at the head of the poll
• at the heels of
• at the instance of
• at the latest
• at the least
• at the mercy of
• at the most
• at the outside
• at the point of
• at the ready
• at the risk of
• at the same time
• at the sharp end
• at the slope
• at the time
• at the top of one's voice
• at the top of the tree
• at the uptak
• at the wheel
• at the worst