逓

communications (e.g. post, telegraph)

Ministry of Communications and Transportation (dissolved in 1949)

Minister of Communications and Transportation (1885-1949)

successively

post office

forwarding

gradual decrease

gradual increase

relay

multiplier (e.g. frequency)

step-down transformer

law of diminishing marginal utility

frequency multiplier

multiplication (e.g. of frequencies)

diminishing returns

law of diminishing returns

law of diminishing marginal product

delivery of packages