1. (noun) continuance in time

• duration

2. (noun) size of the gap between two places

• distance

1. (noun) the linear extent in space from one end to the other; the longest dimension of something that is fixed in place

• circumference
• diam
• diameter
• longness
• r
• radius
• shortness

2. (noun) continuance in time

• brevity
• briefness
• transience
• continuation
• lengthiness
• prolongation
• protraction
• endlessness
• impermanence
• impermanency
• longness
• permanence
• permanency
• shortness

3. (noun) size of the gap between two places

• altitude
• arm's length
• gauge
• leg
• light time
• skip distance
• wingspan
• wingspread
• wingspread

1. (noun) the linear extent in space from one end to the other; the longest dimension of something that is fixed in place

• dimension
• fundamental measure
• fundamental quantity
• physical property

2. (noun) continuance in time

• temporal property

3. (noun) the property of being the extent of something from beginning to end

• extent

4. (noun) size of the gap between two places

• size

5. (noun) a section of something that is long and narrow

• section
• segment

1. (noun) continuance in time

• drawn-out
• extended
• lengthy
• prolonged
• protracted