Alternative form of exoplanet

Any planet of the solar system or any exoplanet which is "Earth-like" in the sense that it is composed primarily of metals and rock, in contrast to a planet which is a gas giant.

The process in which genetic signals are transmitted across a single embryonic layer, such as ectoderm.

To expect; to anticipate future actions based on.

(courtship) To be coy; to feign lack of romantic interest in a certain person, so as to force that person to be more overt in expressing interest.

A Fresnel zone plate.

(physics) An optical device that uses diffraction through alternate transparent and opaque rings to function as a lens

To behave in a silly, or childish, or irresponsible way. / To work with in a non-serious manner. / (idiomatic) To engage in sexual practices outside of marriage.

(idiomatic) To repeat exactly what one previously said or did.

(education) A teacher's document used to plan a lesson.