浸透 （シントウ） permeation (of thought, ideology, culture, etc.), infiltration (e.g. of ideas), spread, penetration (e.g. into a market), pervasion, permeation (of a liquid, etc.), soaking, percolation, osmosis

浸水 （シンスイ） inundation, submersion, flood

防浸 （ボウシン） watertight, waterproof

液浸 （エキシン） immersion, dipping, in microscopy, immersing both the objective lens and the specimen in a liquid to increase the numerical aperture, in photolithography, filling the air gap between the final lens and the wafer surface with a liquid to increase the resolution

浸す （ひたす） to soak, to dip, to steep, to immerse, to moisten, to wet

浸る （ひたる） to be soaked in, to be flooded, to be submerged, to be immersed in (joy, memories, alcohol, etc.), to give oneself over to, to bask in

浸かる （つかる） to be submerged, to be soaked, to be pickled, to be well seasoned, to be totally immersed (in a condition, e.g. laziness)