An bayyana lokacin dipole azaman ma'aunin rarrabuwar cajin wutar lantarki mai kyau da mara kyau a cikin tsarin, kamar kwayoyin halitta ko kwayar atomic. A wasu kalmomi, adadin vector ne wanda ke nuna girma da alkiblar rabuwar cajin lantarki a cikin tsarin. An bayyana lokacin dipole a cikin raka'a na Debye (D), mai suna bayan Peter Debye, wanda yayi daidai da 3.33564 × 10^-30 C.m. Lokacin dipole shine ainihin ra'ayi a cikin ilmin sunadarai da kimiyyar lissafi kuma ana amfani dashi don bayyana polarity na kwayoyin halitta, ƙarfin ƙarfin intermolecular, da kuma daidaitawar kwayoyin halitta a filin lantarki.