noun
altitude
ALT-ih-tyood
noun
1
The height of something above sea level or the ground.
"The plane cruised at an altitude of 35,000 feet."
"Athletes often train at high altitude to boost their endurance."
2
In geometry, the perpendicular distance from a shape's vertex to the opposite side.
"To find the triangle's area, multiply the base by the altitude and divide by two."
How to Use Altitude
Learner’s notesIn plain EnglishHow high something is, whether that's a plane, a mountain, or a point in a geometric shape.
Common pairings
high altitude
gain altitude
altitude sickness
Word Forms
altitudes plural
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “altitude”
A quick quiz — meaning, synonyms & usage
→
Fill the Gap
Can you complete this real example?
The plane cruised at an _____ of 35,000 feet.
Etymology
From Latin altitudo, "height," from altus, "high."