密

extremely complete (thorough, careful) and detailed

Physics

compressional wave; longitudinal wave; dilatational wave; wave of condensation and rarefaction

Buddhism

esoteric Buddhism of the Japanese Shingon sect

Mathematics

probability density function

coarseness and fineness; sparse or dense (growth)

going into a huddle (over); holding secret (closed-door) conference (about); laying heads together in secret consultation

ultra-precision machining; ultra-precision cutting

secret ballot

non-disclosure agreement; NDA

consolidation

Computing

private key (cryptography); secret key

detailed and careful; scrupulous; meticulous; elaborate

high density

military secret

Cabinet Secretariat classified fund; secret Cabinet expenses

Hami melon (Cucumis melo var. inodorus); Chinese Hami melon; snow melon

recording audio without consent; secret recording

privacy of correspondence

precision engineering

Abbreviation

low-density lipoprotein; LDL

Computing

secret key cryptography; symmetric key cryptography

Computing

secret key cryptosystem

precision machinery industry

population density