The length of time, or span that one can pay attention, or concentrate on one topic without becoming distracted.

plural of attention span

Of or pertaining to attention

(event organization) A rough count of the number of attendees for multiple-day events, by counting the number of days of access each individual has been granted.

(archaic) third-person singular simple present indicative form of attend

(archaic) second-person singular simple present form of attend

(archaic) Attentive, heedful; intent.

(obsolete) Attention.

(intransitive) to rouse someone to notice something, to cause someone to focus on something.

plural of attentat