S-curves
Snaking road sections
S-curves are graphs shaped like the letter S, showing slow initial growth, rapid acceleration in the middle, then leveling off at the top.
They appear across disciplines—technology adoption, population growth, learning curves, project timelines.
The shape captures how many processes start slowly, hit a phase of explosive growth, then approach a natural limit: The product's sales followed a classic S-curve.
Full growth achieved
- saturationState of complete permeation
- plateauFlat highland area
- declineDecrease or refuse
- introductionPreliminary section or presentation
emergence · stagnation · commoditization · consolidation · equilibrium · steady-state · obsolescence · peak
Legal family formation
- diffusionPassive molecular spreading
- inflectionWord form alteration
- trajectoryPath of moving object
- penetrationEntry into something
takeoff · acceleration · momentum · proliferation · logistic · sigmoid · expansion · progression
Prolonged economic decline
- recoveryRegaining what was lost
- expansionIncrease in scope
- contractionReduction in size
- boomLoud deep sound
Something that extends outward
- trendlineStatistical direction indicator
- extrapolationExtending data beyond bounds
- time-seriesData indexed by moments
- regressionReturn to former state
fitting · modeling · estimation · charting · analytics · parameter · asymptote
Complete skill or control
- plateauFlat highland area
- competenceAdequate ability to function
- proficiencySkilled performance level
- practiceRepeated work toward mastery
performance · improvement · breakthrough · expertise · fluency · automaticity
maturity
Full growth achieved
- saturationState of complete permeation
- plateauFlat highland area
- declineDecrease or refuse
introduction · emergence · stagnation · commoditization · consolidation · equilibrium · steady-state · obsolescence · peak · trough
adoption
Legal family formation
- diffusionPassive molecular spreading
- inflectionWord form alteration
- trajectoryPath of moving object
penetration · takeoff · acceleration · momentum · proliferation · logistic · sigmoid · expansion · progression · uptake
recession
Prolonged economic decline
- recoveryRegaining what was lost
- expansionIncrease in scope
- contractionReduction in size
boom · bust · productivity · disruption
projection
Something that extends outward
- trendlineStatistical direction indicator
- extrapolationExtending data beyond bounds
- time-seriesData indexed by moments
regression · fitting · modeling · estimation · charting · analytics · parameter · asymptote
mastery
Complete skill or control
- plateauFlat highland area
- competenceAdequate ability to function
- proficiencySkilled performance level
practice · performance · improvement · breakthrough · expertise · fluency · automaticity
- leading linesconverging lines, vanishing point, diagonals, convergence, railroad tracks
- Rococo textilessilk brocade, woven silk, damask, brocade, gold thread
S-curvesstraightaways
Unbending course segments
straight lines · beelines · tangents · straights · right angles
S-curveslinear growth
Increase at constant rate
exponential growth · linear regression · flat line · steady state · boom-bust cycles
S-curve, curve, curves, curved, curving, curvy, curvature, curvaceous, curvilinear