focussing

adj

1. Commonwealth standard spelling of focusing.

   “The bacteriologist adjusted the focussing knob on the microscope.”

noun

1. (uncountable)Commonwealth standard spelling of focusing.

   “At the time of the accident, the searchlight signals here were fitted with standard narrow-beam focussing, aimed at a train within 70yd of the signal.”

verb

1. (Commonwealth, form-of, gerund, participle, present)present participle and gerund of focus