12-Letter Words Starting: SPE

• become more focused on an area of activity or field of study

• be specific about

• suit to a special purpose

• devote oneself to a special area of work

• evolve so as to lead to a new species or develop in a way most suited to the environment

• make speeches; hold forth, or harangue with a certain degree of formality

• a motile male gamete of a plant such as an alga or fern or gymnosperm

• the male reproductive cell; the male gamete

• the male reproductive cell; the male gamete

• in distinction from others

• a telephone with a microphone and loudspeaker; can be used without picking up a handset; several people can participate in a call at the same time

• the use of spectroscopes to analyze spectra

• the position of Speaker