penetrant
Flaw-revealing inspection fluid
Penetrant describes something that penetrates or has the capacity to do so.
A penetrant odor permeates a space; a penetrant gaze seems to see through you.
In technical contexts, a penetrant is a substance designed to seep into cracks or porous materials—dye penetrants reveal flaws in metal, and penetrating oils loosen rusted parts.
The word overlaps with penetrating but sounds more clinical.
Spread through entirely
- infiltrateEnter secretly to observe
- seepageSlow fluid escape
- diffusionPassive molecular spreading
- osmosisSolvent crossing semipermeable barrier
saturation · percolation · capillarity · transudation · absorption · infusion · leaching · permeability
Pigment for changing hues
- tracerPath-marking projectile
- fluorescentEmitting light when energized
- contrastNotable difference between things
- indicatorSign revealing status
marker · nondestructive · testing · flaw · crack · defect · capillary · visible
Encroaching without welcome
- intrudeEnter uninvited
- encroachAdvance beyond proper limits
- piercingPenetrating or very sharp
- breachBreaking of agreement
violate · trespass · infringe · unwelcome · obtrusive · invade · disruptive · aggressive
Dissolving liquid or financially stable
- carrierOne that transports
- vehicleMeans of transport
- emulsifierCombines immiscible liquids
- dispersantAgent breaking up concentrations
surfactant · viscosity · fluorescent · oil-based · lipophilic · sensitivity · dwell · remover
permeate
Spread through entirely
- infiltrateEnter secretly to observe
- seepageSlow fluid escape
- diffusionPassive molecular spreading
osmosis · saturation · percolation · capillarity · transudation · absorption · infusion · leaching · permeability · migrate
dye
Pigment for changing hues
- tracerPath-marking projectile
- fluorescentEmitting light when energized
- contrastNotable difference between things
indicator · marker · nondestructive · testing · flaw · crack · defect · capillary · visible · developer
invasive
Encroaching without welcome
breach · violate · trespass · infringe · unwelcome · obtrusive · invade · disruptive · aggressive · forceful
solvent
Dissolving liquid or financially stable
- carrierOne that transports
- vehicleMeans of transport
- emulsifierCombines immiscible liquids
dispersant · surfactant · viscosity · fluorescent · oil-based · lipophilic · sensitivity · dwell · remover · cleaner
- cnidocytes
- Genetic Traitshair color, dark hair, skin color, dimples, blood type
- surfactantssurfactant, surfactants, detergent, detergents, soap
- textile chemicalsdye, mordant, sizing, bleach, fixative
penetrantimpenetrable
Impossible to pass through
impermeable · blocked · repelled · superficial · excluded
- penetrating stareIntensely focused, probing look
- penetrating oilFluid that loosens corrosion
- deep penetrationEntry far into something
- penetration testingAuthorized security vulnerability assessment
- penetration pricingLow initial prices strategy
- penetration testAuthorized security vulnerability assessment
penetrating, penetrate, impenetrable, penetration, penetrated, penetrable, penetrates, penetrative, penetratingly