facial expression is not in our dictionary (yet). Here's what it could mean:

Example Sentences

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Your car’s sensors, cameras and microphones record your speed, how you drive, where you’re going, who’s with you, what you say, and biological metrics such as facial expression, weight and heart rate.

From Salon • Apr. 23, 2026

Only a few photographers caught this split-second moment when all the elements came together - where his right arm is, the angle of the putter, the position of his legs, his facial expression.

From BBC • Apr. 8, 2026