英语词源字典 - 在线词源网站

esplanade [esplanade 词源字典]: esplanade: [17] Essentially, esplanade is the same word as explain, but whereas explain has lost its underlying literal meaning, esplanade has retained at least a memory of it. It comes ultimately from Latin explānāre, which meant ‘flatten out’, and so esplanade (acquired via French from the Spanish past participle esplanada) was originally simply a ‘large level area’. Its application to the ‘promenade’ at seaside towns is a comparatively recent development.
=> explain[esplanade etymology, esplanade origin, 英语词源]
coplanar (adj.): 1862, from co- + planar.
esplanade (n.): "open space, level or sloping, especially in front of a fortification," 1590s, from French esplanade (15c.), from Spanish esplanada "large level area," noun use of fem. past participle of esplanar "make level," from Latin explanare "to level" (see explain). Or perhaps the French word is from or influenced by Italian spianata, from spianare.
explanation (n.): late 14c., from Latin explanationem (nominative explanatio) "an explanation, interpretation," noun of action from past participle stem of explanare "to make plain or clear, explain," literally "make level, flatten," from ex- "out" (see ex-) + planus "flat" (see plane (n.1)).
explanatory (adj.): 1610s, from or modeled on Late Latin explanatorius "having to do with an explanation," from Latin explanat-, past participle stem of explanare "make plain or clear" (see explanation).
planar (adj.): 1850, from Latin planaris "level, flat," from planum "plane" (see plane (n.1)).
Planaria (n.): flat worm-like animal, 1819, from Modern Latin (1776) noun use of fem. of Latin planarius, literally "on level ground" (here used to mean "flat"), from planum, planus "flat, level, even, plain" (see plane (n.1)). Related: Planarian.
self-explanatory (adj.): 1813, from self- + explanatory.