significant digit
significant figure

Data from this study was only reported to two significant figures.

She was a significant figure in the history of the British canal system.

The answer cannot have any significant figures past the ones place.

For example, 0.00052 has two significant figures: 5 and 2.

She was also a significant figure in the early history of photography.

He was a significant figure in the evolution of American children's literature.

Its past students are many significant figures in 20 century music.

Isn't he a significant figure, someone who must have known a great deal of the truth?

The changes have cost more than $840 million so far, considered a significant figure even in the state's large health-care budget.

Each of the four houses is named after a significant figure in the school community.