oh [(')ō] -interj

  1. used to express an emotion (as surprise or desire) or in response to physical stimuli
  2. used in direct address
    • oh, waiter Will you come here, please?
  3. used to express acknowledgment or understanding of a statement
  4. used to introduce an example or approximation
  5. zero

OH -abbr

  1. Ohio

ohia [ō-'hē-ə] -n

  1. lehua

ohia lehua -n

  1. lehua

ohm ['ōm] -n, adj, adv

  1. the practical meter-kilogram-second unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere

ohm·me·ter ['ō(m)-,mē-tər] -n

  1. an instrument for indicating resistance in ohms directly

OHMS -abbr

  1. on Her Majesty's service; on His Majesty's service

Ohm's law ['ōmz-] -n

  1. a law in electricity: the strength of a direct current is directly proportional to the potential difference and inversely proportional to the resistance of the circuit