Definitions for "Significant"
in science, when we say something is significant, it means that the relationship has been tested with statistical methods and falls within some accepted range.
A difference among observed values, such as group means, deemed large enough to be considered reliable.  Determination of significance comes from a statistical test, and carries with it the probabilistic characterization of significance level.  As used in the statistics context, the word does not have its everyday connotation of importance.
The result of a hypothesis test is significant if we can reject H0. Sometimes a level of significance () is specified and H0 is rejected if the p-value is less than (often 0.05). The term significant is often used in summing up the result, e.g. there is a significant difference between the speeds of males and females on the bike track.
Fitted or designed to signify or make known somethingl having a meaning; standing as a sign or token; expressive or suggestive; as, a significant word or sound; a significant look.
That which has significance; a sign; a token; a symbol.
rich in significance or implication; "a meaning look"; "pregnant with meaning"
Deserving to be considered; important; momentous; as, a significant event.
A quantity, amount, or degree of importance determined by a State or local government.
Term used to refer to a cultural resource that is important in local, regional, and national prehistory or history, or which is likely to yield answers to current research questions in archaeology and history.
is to be interpreted as implying a risk the potential consequence of which could have a significant effect on one of the objectives, parameters or 'deliverables', even if it has only a small probability of occurrence.
Those authorised processes which have emissions to air, land and water (of the eight key pollutants) in quantities which could pose environmental consequences.
Keywords:  won, fairly, substantial, margin, large
fairly large; "won by a substantial margin"
Message received from your transmitter the most times consecutively in identical form during a satellite pass.
A hazard with a known history or identified high potential of causing accident, injury, illness, damage or loss