transit, ford, ferry, cross, import, deliver, diameter, migrate
渡 centers on moving across a boundary or gap: crossing a river, ferrying goods, delivering something to another side, or migrating. The ideas of transit, import, and diameter all extend from this core sense of spanning a divide.
渡 combines 氵 (water) with 度, which likely contributes both sound and the idea of measuring or passing through. The compound suggests crossing water or a measured passage.
Water 氵 on the left and 度 on the right: picture a ferry measuring the distance as it crosses the river, delivering people and goods to the other side.
For ト, imagine a toe dipping into the water as you step onto the ferry: toe -> ト, and you cross the river.
to cross over; to go across
ferry (crossing); ferry(boat)
to ferry across (e.g. a river); to carry across; to traverse
transfer; assignment; conveyance
throughout; over a period of ...; over a span of ...
delivery; handing over; turning over; extradition
voyage; passage; travelling
delivery; transfer; hand-over
to hand (over); to deliver in person
sentence; judgment; judgement; pronouncement; order; command
to look out over; to survey (scene); to take an extensive view of
crossing; ferry
to deliver; to extradite; to stretch across; to hand over
migratory bird; bird of passage
mediation; good offices; go-between; intermediary; mediator; bridge (between)
visit (from abroad)
tightrope walking; high-wire act; funambulism
to diffuse; to spread throughout; to prevail; to become widespread; to reach everyone
crossing; passage; transit
dishonouring (a bill); dishonoring; bouncing (a cheque, check); non-payment
to announce; to tell; to sentence; to order
length of a blade
to hand over; to turn over; to cede
ferry; ferryboat
transition period