| effendi | effendi |
| effervescence | sparkling |
| effervescent | sparkling |
| Effervescente | Effervescent powder |
| effet | impression |
| Effet Aharonov-Bohm | Aharonov-Bohm effect |
| Effet Allais | Allais effect |
| Effet bague de diamant | Diamond ring effect |
| Effet Balassa-Samuelson | Balassa-Samuelson effect |
| Effet Barnum | Forer effect |
| Effet Bergeron | Bergeron process |
| effet biologique | biological effect |
| effet biologique de la pollution | biological effect of pollution |
| Effet Blazhko | Blazhko effect |
| effet boomerang | boomerang effect |
| effet boule de neige | domino effect |
| Effet Casimir | Casimir effect |
| effet Cerenkov | Cerenkov effect |
| effet climatique | climatic effect |
| Effet Coandă | Coandă effect |
| Effet coca-mentos | Diet Coke and Mentos Eruption |
| Effet cocktail party | Cocktail party effect |
| Effet Compton | Compton scattering |
| Effet Compton inverse | Inverse Compton effect |
| effet concomitant | side effect |
| effet d'entraînement | domino effect |
| effet de bord | side effect |
| effet de champ | field effect |
| effet de combinaison | combination effect |
| Effet de foehn | Foehn wind |
| Effet de halo | Halo effect |
| Effet de phase | Phase effect |
| effet de pollution | pollution effect |
| effet de report | carry-over effect |
| Effet de réseau | Network effect |
| Effet de selection | Selection effect |
| effet de serre | greenhouse effect |
| Effet de simple exposition | Exposure effect |
| Effet de sol | Ground effect in aircraft |
| Effet de style | Stylistic effect |
| Effet de Sunyaev Zeldovich | Sunyaev Zeldovich effect |
| Effet de temperature | Temperature effect |
| effet des radiations | radiation effect |
| effet domino | domino effect |
| Effet Doppler Fizeau | Doppler effect |
| Effet Doppler-Fizeau | Doppler effect |
| Effet du témoin | Bystander effect |
| Effet Dunning-Kruger | Dunning-Kruger effect |
| Effet dynamo | Dynamo theory |
| Effet Early | Early effect |
| Effet ELIZA | ELIZA effect |
| Effet Evershed | Evershed effect |
| Effet facile | Facile effect |
| Effet Faraday | Faraday effect |
| Effet Forbush | Forbush effect |
| Effet gravitationnel | Gravitational effect |
| effet génétique | genetic effect |
| Effet Hall | Hall effect |
| Effet Hanle | Hanle effect |
| Effet Hawthorne | Hawthorne effect |
| Effet idéomoteur | Ideomotor effect |
| Effet inductif | Inductive effect |
| effet indésirable | side effect |
| Effet isotopique | Kinetic isotope effect |
| Effet Jahn-Teller | Jahn-Teller effect |
| Effet Josephson | Josephson effect |
| Effet Joule-Thomson | Joule-Thomson effect |
| Effet Kaye | Kaye effect |
| Effet Kerr | Kerr effect |
| Effet Kondo | Kondo effect |
| Effet Koulechov | Kuleshov Effect |
| Effet Leidenfrost | Leidenfrost effect |
| Effet Lense-Thirring | Frame-dragging |
| Effet lotus | Lotus effect |
| Effet magnetooptique | Magneto optical effects |
| Effet Magnus | Magnus effect |
| Effet magnéto-optique | Magneto optical effect |
| Effet marqué | Telling effect |
| Effet Mars | Mars effect |
| Effet Matthieu | Matthew effect |
| Effet McGurk | McGurk effect |
| Effet Meissner | Meissner effect |
| Effet Miller | Miller effect |
| Effet Mpemba | Mpemba effect |
| Effet multiplicateur | Spending multiplier |
| Effet Mössbauer | Mössbauer effect |
| Effet papillon | Butterfly effect |
| Effet Paschen Back | Paschen Back effect |
| effet pathologique | pathologic effect |
| Effet phi | Phi phenomenon |
| Effet Pockels | Pockels effect |
| Effet Poynting Robertson | Poynting Robertson effect |
| Effet Poynting-Robertson | Poynting-Robertson effect |
| effet psychique | psychic effect |
| effet psychologique | psychological effect |
| effet psychosomatique | psychosomatic effect |
| Effet Purkinje | Purkinje effect |
| Effet Pygmalion | Pygmalion effect |
| Effet périmé | Expired bill |
| Effet Raman | Raman effect |
| Effet Razin | Razin effect |
| Effet relativiste | Relativistic effect |
| effet réciproque | interplay |
| Effet Sachs-Wolfe | Sachs-Wolfe effect |
| Effet Sagnac | Sagnac effect |
| Effet Schüfftan | Schüfftan process |
| effet secondaire | side effect |
| Effet Seebeck | Seebeck effect |
| Effet Shapiro | Shapiro delay |
| Effet Stark | Stark effect |
| effet Streisand | Streisand effect |
| Effet Stroop | Stroop effect |
| Effet stérique | Steric effects |
| effet sur l'environnement | effect on the environment |
| effet sur l'homme | effect on man |
| effet sur la santé | effect on health |
| effet sur le niveau de l'emploi | employment level effect |
| Effet Tcerenkov | Cerenkov effect |
| Effet Tcherenkov | Cerenkov effect |
| Effet thermique | Thermal effects |
| Effet tunnel | Quantum tunnelling |
| Effet Unruh | Unruh effect |
| Effet Wilson | Wilson effect |
| Effet Wilson Bappu | Wilson Bappu effect |
| Effet Yarkovsky | Yarkovsky effect |
| Effet yeux rouges | Red-eye effect |
| Effet Zeeman | Zeeman effect |
| Effet Zeigarnik | Zeigarnik effect |
| effet à long terme | long-term effect |
| effets | effect |
| Effets du cannabis sur la santé | Health issues and the effects of cannabis |
| effets personnels | personal property |
| Effets spéciaux | SFX |
| Effets à payer | Accrued charges |
| effets électrocinétiques | electrokinetics |
| effeuillage | strip |
| efficace | telling |
| efficacement | effectively |
| efficacité | workability |
| Efficacité lumineuse spectrale | Luminous efficacy |
| efficacité énergétique | energy efficiency |
| Efficeon | Efficeon |
| efficience | effectiveness |
| Efficience du marché | Efficient market hypothesis |
| efficience économique-écologique | economical-ecological efficiency |
