monophasic
/ˌmɒnə(ʊ)ˈfeɪzɪk/adjective
1 Electricity (Of an electric current or signal) exhibiting a single phase; (of an electrical device) operating on a single phase.
2 Physiology. Designating or relating to (a record of) a nerve impulse that is of the same sign throughout, and experimental arrangements devised to give such records.
3 Physical Chemical Of a substance or mixture: consisting of a single phase.
4 Science. Of a process, or a curve representing it: occurring in a single phase; not marked by two or more stages of different character.
Origin
Late 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From mono- + -phasic.