slitlessadj.

Etymology: < slit n.Previous versions of the OED give the stress as: ˈslitless.

Of a spectroscope: Made without the usual slit for admitting the light.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > instruments for observing > [adjective] > light or radiation

slitless1881

1881 C. A. Young Sun 235 By examining the eclipse with a so-called slitless spectroscope.

1885 A. M. Clerke Pop. Hist. Astron. 223 Making separate trial of a ‘slitless spectroscope’ devised for the occasion.

This entry has not yet been fully updated (first published 1912; most recently modified version published online June 2019).

单词	slitless
释义	slitlessadj. Etymology: < slit n.Previous versions of the OED give the stress as: ˈslitless. Of a spectroscope: Made without the usual slit for admitting the light. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments for observing > [adjective] > light or radiation slitless1881 1881 C. A. Young Sun 235 By examining the eclipse with a so-called slitless spectroscope. 1885 A. M. Clerke Pop. Hist. Astron. 223 Making separate trial of a ‘slitless spectroscope’ devised for the occasion. This entry has not yet been fully updated (first published 1912; most recently modified version published online June 2019). < adj.1881
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