echard/ˈɛt͡ʃɑː(ɹ)d/EtymologyFrom Ancient Greek ἔχω (ékhō, “to hold”) + ἄρδω (árdō, “to water, to irrigate”).echard means A surname. Lexicurio rates it Sui generis — a strength score of 90 out of 100.nameA surname.nounThe portion of water in a sample of soil that is not available to vegetation.“The echard of a given habitat is experimentally ascertained by isolating a block of soil by impermeable plates, allowing it to dry slowly and determining its water-content at the time when the plants growing on it are wilting irrecoverably”