important in effect or meaning

fairly large

too closely correlated to be attributed to chance and therefore indicating a systematic relation

rich in significance or implication

any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value)

any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value)

a person (not necessarily a spouse) with whom you cohabit and share a long-term sexual relationship

in a statistically significant way

in a significant manner

in an important way or to an important degree