Etymograph

English

subsecond

From sub- + second.

Formed from sub- + second

Proto-Indo-European *upó ‘up; from below’

Proto-Italic *supo ‘under’

Latin sub ‘under, beneath, below’

English sub-

Proto-Indo-European *sekʷ- ‘to follow’

Proto-Italic *sekʷondo-

Latin secundus ‘following’

Old French second

Middle English secunde

English second

Today it means

adj Relating to a time interval of less than one second.

Sources

Sources: Wiktionary, “subsecond”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / subsecond

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