An Etymological Dictionary of Astronomy and Astrophysics

The quality of a model when it is insensitive to small discrepancies in assumptions.

Etymology (EN): From L. robustus “strong and hardy,” literally “as strong as oak,”
from robur, robus “hard timber, strength,” also “a special kind of oak,” named for its reddish heartwood, from L. ruber, → red.

Etymology (PE): Tanâvar “robust, stout, corpulent,” from tan “corpus, body,” → if and only if + âvar contraction of âvarandé agent noun of âvardan “to bring; to cause, produce,” → collect.