magni-, magn- +
(Latin: large, big, great)
magnum bonum
1. Any of several varieties of large cooking plum; such as, magnum bonum plum and can be applied to other qualifying words; for example, magnum bonum health food.
2. Etymology: magnum bonum "a great good", "a large good thing"; from classical Latin magnum, neuter singular of magnus, "great" plus bonum, neuter singular of bonus, "good" after classical Latin summum bonum, "highest good", the "chief or supreme good".
magnum opus
1. A great work, especially a literary or artistic masterpiece.
2. An artist's, writer's, or composer's greatest single work.
Non est magnus pumilio, licet in monte constiterit; colossus magnitudinem suam servabit, etiam si steterit in puteo.
A dwarf is not tall, even though he stand on a mountain; a colossus keeps his height, even though he stand in a well.
From Seneca, Ad Lucilium Epis (c. A.D. 65).
Related "big, large, great" words:
grand-;
macro-;
major-;
maxi-;
mega-;
megalo-.
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