| aplanatic | (adjective) free from or corrected for spherical aberration | - |
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| coplanar | (adjective) lying in the same plane | - |
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| esplanade | (noun) a long stretch of open level ground (paved or grassy) for walking beside the seashore | - |
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| explanandum | (noun) (logic) a statement of something (a fact or thing or expression) to be explained | Synonyms: explicandum |
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| explanans | (noun) (logic) statements that explain the explicandum; the explanatory premises | - |
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| explanation | (noun) thought that makes something comprehensible | - |
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| (noun) a statement that makes something comprehensible by describing the relevant structure or operation or circumstances etc. | Synonyms: account |
| (noun) the act of explaining; making something plain or intelligible | - |
| explanatory | (adjective) serving or intended to explain or make clear | - |
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| lanai | (noun) a veranda or roofed patio often furnished and used as a living room | - |
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| lanate | (adjective) covered with dense cottony hairs or hairlike filaments | Synonyms: woolly |
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| planar | (adjective) involving or having two dimensions | Synonyms: two-dimensional |
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| planaria | (noun) free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts | Synonyms: planarian |
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| planarian | (noun) free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts | Synonyms: planaria |
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| planate | (adjective) having been flattened | Synonyms: flattened |
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| planation | (noun) the process of erosion whereby a level surface is produced | - |
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| solanaceous | (adjective) of or relating to plants of the family Solanaceae (the potato family) | - |
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