Kwa nukta kama kipimo cha wakati angalia sekunde Nukta (kutoka Kiarabu نقطة, nuqta; kwa Kiingereza: point) katika elimu ya hisabati na jiografia ni kitu au mahali bila urefu wala upana, yaani bila eneo lolote. Nukta haina pande wala haiwezi kugawiwa. Kwa lugha ya jiometria inaweza kuelezwa pia kuwa duara yenye kipenyo cha 0. Lakini ina mahali panapoweza kutajwa. Clarke, Bowman, 1985, "Individuals and Points," Notre Dame Journal of Formal Logic 26: 61–75. De Laguna, T., 1922, "Point, line and surface as sets of solids," The Journal of Philosophy 19: 449–61. Gerla, G., 1995, "Pointless Geometries Archived 17 Julai 2011 at the Wayback Machine." in Buekenhout, F., Kantor, W. eds., Handbook of incidence geometry: buildings and foundations. North-Holland: 1015–31. Whitehead, A. N., 1919. An Enquiry Concerning the Principles of Natural Knowledge. Cambridge Univ. Press. 2nd ed., 1925. Whitehead, A. N., 1920. The Concept of Nature. Cambridge Univ. Press. 2004 paperback, Prometheus Books.