arrive at a conclusion

arrive Verb

— If you arrive somewhere, you come to that place, usually the place that you planned to go to. Is everything ready? I expect the guests to arrive soon. Please arrive at the airport at least 2 hours before your flight. We arrive in New York at 10:52. They asked us to arrive early to help get ready for the party. Different people thinking about the same question often arrive at the same answer. — If something arrives somewhere, it comes to that place, usually the place that it was supposed to go to. Five days later a letter arrived by Federal Express. — If a time or event arrives, it moves from the future into the present. Finally the day arrived for him to come home.

at Preposition

— Used to describe where something is, or when saying something's position I am at home. Let's meet at the pub! — The time at which something happened or will happen Breakfast is at 9 o'clock. At 5pm we went home. — Indicating something's state At half price! Water boils at high temperatures.

at Symbol

— The @ symbol, used to replace at support@microsoft.com is an email address. Apples @ £1.50 per kilogram.

a Determinative

— A is used when the following word could be any of a certain type. Compare "A book I saw on the shelf" and "The book I gave you yesterday".

a Noun

— A is the first letter of the alphabet. The letter "a" comes before "b". — In some schools, an A is a very high grade. Ron got an A on his earth science test.

conclusion Noun

— A writer or speaker's conclusions are the ideas that they have after thinking about all the important information. The study's main conclusion is that more money will not solve the problem. — The conclusion is the end. At the conclusion of the story, we still don't know why he did it.