Webster's Online Dictionary
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"FEMTO" is a common misspelling or typo for: femto-.

Specialty Definition: FEMTO

DomainDefinition
AerospaceA prefix meaning multiplied by 10-15. Abbreviation f. (references)

Source: compiled by the editor from various references; see credits.

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Topics by Level of Interest: FEMTO

Topics sorted by level of InterestLevel (1=low, 600=high)   Topics sorted AlphabeticallyLevel (1=low, 600=high)
Femto Forum4   Femto Forum4

Source: the editor, created by/for EVE to gauge likely levels of human interest in linguistically triggered topics (compiled across various sources, such as Wikipedia and specialty expression glosses).