a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee"
having a bearing on or connection with the subject at issue; "the scientist corresponds with colleagues in order to learn about matters relevant to her own research"
indicating exactness or preciseness; "he was doing precisely (or exactly) what she had told him to do"; "it was just as he said--the jewel was gone"; "it has just enough salt"
in a precise manner; "she always expressed herself precisely"
just as it should be; "`Precisely, my lord,' he said"
a subdivision of a written work; usually numbered and titled; "he read a chapter every night before falling asleep"
a series of related events forming an episode; "a chapter of disasters"
a local branch of some fraternity or association; "he joined the Atlanta chapter"
an ecclesiastical assembly of the monks in a monastery or even of the canons of a church
any distinct period in history or in a person's life; "the industrial revolution opened a new chapter in British history"; "the divorce was an ugly chapter in their relationship"
without deviation; "the path leads directly to the lake"; "went direct to the office"
in a forthright manner; candidly or frankly; "he didn't answer directly"; "told me straight out"; "came out flat for less work and more pay"
without anyone or anything intervening; "these two factors are directly related"; "he was directly responsible"; "measured the physical properties directly"