極低温科学[kyokuteionkagaku] cryonics
高低[koutei] high and low
最低[saitei] least
最低血圧[saiteiketsuatsu] diastolic blood pressure
最低限[saiteigen] minimum

最低生活費[saiteiseikatsuhi] minimum cost of living
最低賃金[saiteichingin] minimum wage
最低賃金制[saiteichinginsei] minimum wage system
中低[nakabiku] hollow
超低価格[chouteikakaku] ultra-low cost

悪水[akusui] undrinkable water
井戸水[idomizu] well water
一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一水[issui] current (of water)
溢水[issui] inundation

飲水量[insuiryou] amount of drinking
飲料水[inryousui] drinking water
烏の行水[karasunogyouzui] quick bath
雲水[unsui] itinerant priest
塩化水素[enkasuiso] hydrogen chloride

衛生基準[eiseikijun] health standards
下準備[shitajunbi] preliminary arrangements
間接照準射撃[kansetsushoujunshageki] indirect fire
規準化[kijunka] normalization
技術水準[gijutsusuijun] state-of-the-art

公準[koujun] postulate (in math, logic, etc.)
高水準[kousuijun] high level
準える[nazoraeru] to pattern after
準じる[junjiru] to follow