The most common and most likely answer to this crossword clue is the 7 letter word CONCAVE
I've seen this crossword clue in The Times
C
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More clues leading to the result CONCAVE
- Conservative with word of warning referring to type of lens
- Study hollow that’s saucer-shaped
- Depressed politician given cold welcome
- Vote against closure of Electric Avenue, curving inwards
- Depressed? Do cocaine before farewell
- Depressed about entering nunnery without New Testament
- Take care pursuing prisoner with depression
- Excavated thief’s den
- The left leave the meeting depressed
- Depressed liberal leaves assembly
Buddy explains!
The straight part
We know that "type of lens" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case type of lens = concave.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CONCAVE mean?
CONCAVE noun- A concave surface or curve.
- The vault of the sky.
- One of the celestial spheres of the Ptolemaic or geocentric model of the world.
- An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
- An indentation running along the base of a surfboard, intended to increase lift.
- An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
- To render concave, or increase the degree of concavity.
- Curved like the inner surface of a sphere or bowl
- (of a polygon) not convex; having at least one internal angle greater than 180 degrees.
- (of a real-valued function on the reals) satisfying the property that all segments connecting two points on the function's graph lie below the function.
- Hollow; empty