the drag on an aircraft caused by the interaction of two aerodynamic bodies.
Intrusive vs. Obtrusive
The meanings and sounds of both words are close enough that it can be easy to confuse them. Some thesauruses present the words as synonyms, but there are a few subtle distinctions between them.
Read more in this article about some frequently asked questions and fun facts related to our definitions.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019