Examples of milestone in a sentence
the new drug was regarded as a milestone in the treatment of heart disease
First Known Use of milestone
MILESTONE Defined for English Language Learners
Definition of milestone for English Language Learners
: a stone by the side of a road that shows the distance in miles to a specified place
: an important point in the progress or development of something : a very important event or advance
MILESTONE Defined for Kids
Definition of milestone for Students
1 : a stone by the side of a road showing the distance in miles to a given place
2 : an important point in progress or development His discovery was a major milestone in scientific research.
Seen and Heard
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