time·scale 
(tīmskāl′)
(tīmskāl′)n.
1. A period of time seen in relation to a process or a series of phenomena: "What seems most steadfast over the human life span may be evanescent on a geological or astronomical timescale" (Brian Hayes).
2. A schedule or arrangement of events or commitments: The two nations agreed to a timescale for disarmament.
- Indo-European root: bhares-
- Indo-European root: bhau-
- Indo-European root: bhegw-
- Indo-European root: bhei-
- Indo-European root: bheid-
- Indo-European root: bheidh-
- Indo-European root: bhel-
- Indo-European root: bhel-
- Indo-European root: bhel-
- Indo-European root: bhelgh-
- Indo-European root: bhendh-
- Indo-European root: bher-
- Indo-European root: bher-
- Indo-European root: bhergh-
- Indo-European root: bhergh-
- Indo-European root: bherəg-
- Indo-European root: bhes-
- Indo-European root: bheudh-
- Indo-European root: bheug-
- Indo-European root: bheuə-
- Indo-European root: bhleu-
- Indo-European root: bhlē-
- Indo-European root: bhoso-
- Indo-European root: bhreg-
- Indo-European root: bhreu-