位相速度
Reading
                Kana: 
                いそうそくど
            
                    
                Romaji: 
                isousokudo
            
            Definition
Kanji
Readings: イ、 くらい、 ぐらい
                        Meanings: rank, grade, throne, crown, about, some
                    Readings: ソウ、 ショウ、 あい-
                        Meanings: inter-, mutual, together, each other, minister of state, councillor, aspect, phase, physiognomy
                    Readings: ソク、 はや.い、 はや-、 はや.める、 すみ.やか
                        Meanings: quick, fast
                    Readings: ド、 ト、 タク、 たび、 -た.い
                        Meanings: degrees, occurrence, time, counter for occurrences, consider, attitude