epoch
Cross references: 1. period ep.och \'ep-*k, 'ep-.a:k also 'e--.pa:k\ \'ep-*-k*l, 'ep-.a:k-*l\ \-*-le-\ n [ML epocha, fr. Gk epoche- cessation, fixed point, fr. epeche]in to pause, hold back, fr. epi- + echein to hold - more at SCHEME 1: an instant of time or a date selected as a point of reference in astrono my 2a: an event or a time marked by an event that begins a new period or devel opment 2b: a memorable event or date 2c: TIME 3a: an extended period of time usu. characterized by a distinctive developm ent or by a memorable series of events 3b: a division of geologic time less than a period and greater than an age - ep.och.al aj
Webster's English Dictionary