FEMTOSECOND
\fˈɛmtə͡ʊskˌɒnd], \fˈɛmtəʊskˌɒnd], \f_ˈɛ_m_t_əʊ_s_k_ˌɒ_n_d]\
Sort: Oldest first
-
one quadrillionth of a second; one thousandth of a nanosecond
By Princeton University
-
one quadrillionth of a second; one thousandth of a nanosecond
By DataStellar Co., Ltd