Wiktionary
approx.
a. (abbreviation of approximate English) adv. (abbreviation of approximately English) alt. (abbreviation of approximately English)
Usage examples of "approx.".
Known for approx. the last thirty years that some Nearside craters date from same period as those on Farside.
Nearside Exceptions Known for approx. the last thirty years that some Nearside craters date from same period as those on Farside.