Argyll Robertson pupil Ar·gyll Rob·ert·son pupil (är-gīl' rŏb'ərt-sən)
n.
A pupil that contracts or expands to accommodate changes in focal length but does not respond to light.
| a stew of meat, vegetables, potatoes, etc. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
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