eclipse (solar, lunar, etc.); occultation
encroachment; invasion; erosion (e.g. of market share, rights); erosion; corrosion
rot; decay; erosion; corrosion; etching; rust
total eclipse of the Moon
occultation (by the Moon)
to become eclipsed (of an astronomical object)
dental caries; tooth decay
corrosiveness; causticity
maximum eclipse; maximum obscuration
corrosion resistance; erosion resistance; resistance to corrosion
glacial scouring; glacial erosion; glacial abrasion
damage to crops by vermin (esp. insects); pest damage
protection against corrosion; prevention of corrosion
an anti-corrosive (agent)
total eclipse (solar or lunar); totality
lunar occultation of Venus; occultation of Venus (by the Moon)
tooth erosion; acid erosion; chemical abrasion