Definition of "acute angle" []

• An angle of less than 90°. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The cutting-edge side of the tang is at an acute angle to the bottom end of the shinogi line; the other side runs either straight or at a slight upward angle to mune."
• "All that is required to start the boat is to bring the bow, by means of the pully, to an acute angle with the current."
• "The face wore its mildest expression: the grizzled bushy eyebrows had taken their more acute angle of compassionate kindness, and the mouth, habitually compressed with a pout of the lower lip, was relaxed so as to be ready to speak a helpful word or syllable in a moment."