degrees, occurrence, time, counter for occurrences, consider, attitude
度 centers on measuring or passing through intervals: degrees on a scale, occurrences counted over time, and the mental attitude or consideration one brings to a situation.
degree (angle, temperature, scale, etc.)
time (three times, each time, etc.); times
degree; amount; grade; standard; of the order of (following a number); about; approximately
this time; now
system; institution; organization; organisation
exactly; precisely; just; right; opportunely; fortunately
fiscal year (usu. April 1 to March 31 in Japan); financial year
speed; velocity; pace; rate
India
attitude; manner; behaviour; demeanour; bearing
altitude; height; elevation
once more; again
temperature
a second time; again; once more; twice
never again
angle
frequency (of occurrence)
concentration; density
precision; accuracy
seismic intensity
strength; intensity
sensitivity (e.g. of a measuring instrument); reception (radio, TV, etc.)
density
each time; every time; always; often
度 combines 广 (building) with an inner component that likely contributed the sound and the idea of measuring or passing. The exact historical development of the inner part is uncertain.
Under a roof 广, imagine a hand 又 holding a measuring tool over a container 凵 with a mark 一, checking degrees or counting occurrences.
For ド, picture a door under the roof: door -> ド, and each time you open it you count one occurrence.