diachronic /dī-ə-kronˈik/ or diachronical /dī-ə-kronˈik-əl/

Of the study of a subject (esp a language) through its historical development, opp to synchronic

diachronˈically adverb

diachronism /dī-akˈ/ noun

• contorts
• contos
• contour
• contour cultivation
• contoured
• contour farming
• contour feathers
• contouring
• contour line
• contour lines
• contour map
• contour maps
• contour ploughing
• contours
• contra
• contra-
• contra account
• contra accounts
• contraband
• contrabandism
• contrabandisms
• contrabandist
• contrabandists
• contraband of war
• contrabands