DIOPTRAL
\dɪˈɒptɹə͡l], \dɪˈɒptɹəl], \d_ɪ__ˈɒ_p_t_ɹ_əl]\
Word of the day
dust storm
- a windstorm that lifts up clouds of dust or sand a windstorm that lifts up clouds dust or sand; "it was the kind of duster not experienced in years"