1.  transition(n = noun.act) passage - the act of passing from one state or place to the next; Array
is a kind of change of state
has particulars: fossilisation, fossilization, segue
Derived forms verb transit₁, verb transition₂

2.  transition(n = noun.event) changeover, conversion - an event that results in a transformation; Array
is a kind of shift, transformation, transmutation
has particulars: glycogenesis, isomerisation, isomerization, rectification
Derived form verb transition₁

3.  transition(n = noun.event) Array - a change from one place or state or subject or stage to another; Array
is a kind of alteration, change, modification
has particulars: ground swell, jump, leap, saltation
Derived forms verb transition₂, verb transition₁

4.  transition(n = noun.communication) modulation - a musical passage moving from one key to another; Array
is a kind of musical passage, passage

5.  transition(n = noun.communication) Array - a passage that connects a topic to one that follows; Array
is a kind of passage
has particulars: flashback, flash-forward, dissolve, cut, jump

1.  transition(v = verb.change) Array - cause to convert or undergo a transition; "the company had to transition the old practices to modern technology"
is one way to convert
Derived forms noun transition₃, noun transition₂
Sample sentences: Something ----s; Somebody ----s

2.  transition(v = verb.change) Array - make or undergo a transition (from one state or system to another); "The airline transitioned to more fuel-efficient jets"; "The adagio transitioned into an allegro"
is one way to change, shift, switch
Derived forms noun transition₁, noun transition₃
Sample sentences: Something ----s to somebody; Somebody ----s PP

1.  Passage from one place or state to another; charge; as, the transition of the weather from hot to cold. [1913 Webster]
"There is no death, what seems so is transition." [1913 Webster]

2.  A direct or indirect passing from one key to another; a modulation. [1913 Webster]

3.  A passing from one subject to another. [1913 Webster]
"[He] with transition sweet, new speech resumes." [1913 Webster]

4.  Change from one form to another. [1913 Webster]
" This word is sometimes pronounced tran*sish"un; but according to Walker, Smart, and most other authorities, the customary and preferable pronunciation is tran*sizh"un, although this latter mode violates analogy. Other authorities say tran*zish"un." [1913 Webster]

transition, n.
1 a passing or change from one place, state, condition, etc., to another (an age of transition; a transition from plain to hills).
2 Mus. a momentary modulation.
3 Art a change from one style to another, esp. Archit. from Norman to Early English.
4 Physics a change in an atomic nucleus or orbital electron with emission or absorption of radiation.

Idiom:
transition element Chem. any of a set of elements in the periodic table characterized by partly filled d or f orbitals and the ability to form coloured complexes. transition point Physics the point at which different phases of the same substance can be in equilibrium.

Derivative:
transitional adj. transitionally adv. transitionary adj.

Etymology:
F transition or L transitio (as TRANSIT)

N  conversion, reduction, transmutation, resolution, assimilation, evolution, sea change, change of state, assumption, naturalization, transportation, development, developing, conversion of currency, exchange of currency, exchange rate, bureau de change, chemistry, alchemy, progress, growth, lapse, flux, passage, transit, transition, transmigration, shifting, phase, conjugation, convertibility, crucible, alembic, caldron, retort, convert, pervert, renegade, apostate, converted into, convertible, resolvable into, transitional, naturalized, gradually, &c (slowly) 275 in transitu.

N  transfer, transference, translocation, elocation, displacement, metastasis, metathesis, removal, remotion, amotion, relegation, deportation, asportation, extradition, conveyance, draft, carrying, carriage, convection, conduction, contagion, transfer, transit, transition, passage, ferry, gestation, portage, porterage, carting, cartage, shoveling, vection, vecture, vectitation, shipment, freight, wafture, transmission, transport, transportation, importation, exportation, transumption, transplantation, translation, shifting, dodging, dispersion, transposition, traction, drift, transferred, drifted, movable, portable, portative, mailable, contagious, from hand to hand, from pillar to post, on the way, by the way, on the road, on the wing, under way, in transit, on course, as one goes, in transitu, en route, chemin faisant, en passant, in mid progress, in mid course.

phase transition, transition zone