BASF LNT (Lean NOx Trap) technology removes NOx from diesel engine exhaust.
[edit on Wikidata] Sounding or urethral sounding is the medical use of probes called sounds to increase the inner diameter of the urethra and to locate obstructions in it. Sounds are also used to stretch the urethra in order to receive genital piercing. Urethral sounding and urethral play are also used to refer to this practice in a sexual context. Urethral play can involve the introduction of either soft or rigid items into the meatus of the penis (as well as farther in).
Which is how I came to be sitting in my bedroom one night, sliding a long metal tube into my penis. Urethral sounding rods are a relatively obscure and intimidating member of the sex toy family, usually a long, slender metal cylinder meant to slide into the urethra to create a pleasing dilation effect. Sizes range from 4 to 17 millimeters in circumference, though there is some variation.