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Webster 1913 Edition

Noun.

[L.

peragratio

: cf. F.

peragration

The act or state of passing through any space;

as, the

peragration

of the moon in her monthly revolution

[Obs.]

Sir T. Browne.

Noun.

The act of passing through any space; as the peragration of the moon in her monthly revolution. [Little used.]

peragration ‎(plural peragrations)

(obsolete) The act or state of passing through any space.
The peragration of the moon in her monthly revolution. — Sir Thomas Browne.