1504 Treat. Enformacione & Musyke in Archiv f. das Studium der Neueren Sprachen (1908) 120 425 Enformacione will steteche [sic] a doctor hys game, from superacute to the doble diaspason.

1664 J. Birchensha tr. J. H. Alsted Templum Musicum v. 33 The other [notes] are called..Superacute because they are put above the acute, as e.f.g.

1776 tr. J. Wylde in J. Hawkins Gen. Hist. Music II. ii. vii. 204 The sounds which are placed between the grave and superacute are the most easy for the voice of the singer to move in.

1875 I. L. Rice What is Music? i. vi. 31 The three octaves are the three grades of penitence. The grave is the remorse of the penitent sinner... The superacute is the remission through his acts of charity.

2000 J. Dyer in J. Potter Cambr. Compan. Singing xiv. 169 Marchetto and others maintained that the human voice, whether of wide or narrow compass, required a ‘distinction’ among the graves, acutes and superacutes.

1678 V. Alsop Melius Inquirendum ii. v. 252 As if some superacute Philosopher should undertake to prove, that because eating and sleeping are..subordinate to Health, and life, therefore we ought to lay very little stress on them.

1845 Med. Times 4 Jan. 317/1 This is another well marked example in which the termination of the cerebral irritation in superacute inflammation causes speedy death.

1893 Ann. Gynecol. & Pediatry Dec. 148/1 Dr. Emil Blanc died Sunday morning, carried away at the age of 35 years by super-acute septicæmia.

1902 J. H. Loryea Is Man Free Agent? 148 The corresponding orifices to these irritated nerve-ends may..be super-acute as to sight, hearing, smell, tasting or feeling.

1993 B. Shaw Dimensions (1994) 8 Pearce's superacute vision was able to pick out distinctive lineaments in his face.

1776 tr. J. Wylde in J. Hawkins Gen. Hist. Music II. ii. vii. 206 The note ut..will have a collateral, which may at least be depressed four notes,..the Greek Γ and d superacute are excepted.

1805 Brit. Critic 25 371 By the help of supplementary lines, four subgrave, and four superacute sounds are obtained.

1886 Archæol. Jrnl. (Brit. Archaeol. Assoc.) 45 156 This scale..will be seen to comprise some of the ‘acute’ and ‘super-acute’ notes.

1921 Musical Q. 7 601 [Mme. Catalani's] sonorous, powerful voice, full of charm, a soprano of prodigious range, which reached the superacute G.

1981 J. Herlinger tr. P. de Beldemandi Brevis Summula Proportionum 81 In order to have the proper quantity of syllables, they will exceed the musical hand toward the superacute letters.