The answer to that is 21 days exactly, although you need to bear in mind that this can vary, depending on a number of circumstances. Generally speaking however, fertile chicken eggs which are hatched out by a hen will take 21 days before you see little faces staring at you from underneath their mamma's wings.
In linguistics, a register is a variety of a language used for a particular purpose or in a particular social setting.
record reÂ·cord (rÄ­-kÃ´rd') v. reÂ·cordÂ·ed, reÂ·cordÂ·ing, reÂ·cords. To set down for preservation in writing or other permanent form. To register or indicate. n. recÂ·ord (rÄk'Érd) An account, as of information or facts, set down especially in writing as a means of preserving knowledge. A medical record.