relay, in turn, sending
逓 centers on sequential handover: passing something along in turn, relaying, or sending step by step.
逓 is the modern simplified form of 遞. The older form combines 辶 (movement) with 虒, which likely contributed the sound and the idea of sequential passing. The modern inner component 乕 is a simplification.
The movement radical 辶 wraps around 乕, which looks like a tiger's head passing something along. Picture a relay race where each runner hands off a baton in turn.
For テイ, imagine a relay team passing a tray: tray -> テイ, and the tray moves from person to person in turn.
gradual decrease; gradual diminution
communications (e.g. post, telegraph)
diminishing returns
law of diminishing returns; law of diminishing marginal returns
frequency multiplier
relay
Minister of Communications and Transportation (1885-1949)
Ministry of Communications and Transportation (dissolved in 1949)
multiplication (e.g. of frequencies)
multiplier (e.g. frequency)
gradual increase
successively; in order
forwarding
step-down transformer
law of diminishing marginal utility
law of diminishing marginal product
delivery of packages; postal service
post office