[css-grid-1] s/interpolation/combination/ w3c#3503 (comment)

Author: fantasai

css-grid-1/Overview.bs

@@ -1741,16 +1741,16 @@ Repeat-to-fill: ''auto-fill'' and ''auto-fit'' repetitions</h5>
 	It is suggested that this floor be ''1px''.
 
 <h5 id="repeat-interpolation">
-Interpolation of ''repeat()''</h5>
+Interpolation/Combination of ''repeat()''</h5>
 
 	If two ''repeat()'' notations that
 	have the same first argument (repetition count)
 	and the same number of tracks in their second argument (the track listing),
-	they are interpolated by
-	interpolating each component of their <a>computed track lists</a>
+	they are combined by
+	combining each component of their <a>computed track lists</a>
 	<a>by computed value</a>
-	(just like interpolating a top-level track list).
-	They otherwise interpolate as <a>discrete</a>.
+	(just like combining a top-level track list).
+	They otherwise combine <a lt=discrete>discretely</a>.
 
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