rotundaladj.

1624 A. Darcie tr. Originall of Idolatries xx. 81 Who did not institute for you these rotundall hosts, or that they should bee rather round then square.

1832 J. Bell Syst. Geogr. (new ed.) I. p. ix Rotundal figure of the Earth.

1940 J. Wheelwright Polit. Self-portrait 1919–1939 in Coll. Poems (1983) 144 One rotundal narthex—single-domed, unwalled.

1979 K. G. Feig Hitler's Death Camps (1981) ii. 314 Tolkin's second sculpture is the massive mausoleum built in the shape of a rotundal urn covered by a lifted stone dome.

2000 D. Yue tr. X. Xi Flying Carpet iii. 301 Right now, they are formally seated in the rotundal conference hall on the second floor of the Administration Building.

1935 Philos. Trans. (Royal Soc.) B. 224 386 Though in Diaphus the tractus rotundo-lobaris fibres were identified, here the tractus thalamo-hypothalamicus appears to be the major outlet for rotundal impulses to the hypothalamic centres.

1977 Brain Res. 124 359 (caption) Note the correspondence between regions high in succinate dehydrogenase activity (dark area in left panel) and the locus of termination of rotundal axons (middle panel).

2002 O. Güntürkün in L. J. Rogers & R. J. Andrew Compar. Vertebr. Lateralization 261 The tectofugal system is composed of optic nerve fibres projecting to the contralateral optic tectum, from which fibres project bilaterally to the rotundal nuclei on each side of the thalamus.